| RefNo | Title | Date |
| NLB/18/732 | Copy letter from Arthur William Rucker, to John H Grindley | 1 May 1899 |
| NLB/16/309 | Copy letter from Robert William Frederick Harrison, to V H Veley, Fellow of the Royal Society | 12 March 1898 |
| NLB/19/750 | Copy letter from Arthur William Rucker, to Alfred Bray Kempe, Treasurer, Royal Society | 11 December 1899 |
| MS/547/5/79 | Letter from Arthur W [William] Rucker, 19 Gledhow Gardens, to [Alfred Bray] Kempe | 15 July 1901 |
| EC/1884/18 | Rucker, Sir Arthur William: certificate of election to the Royal Society | |
| MM/17/59 | Letter from Karl Pearson to Arthur W Rucker, Secretary, Royal Society | 30 March 1899 |
| MM/17/87 | Letter from Joseph Larmor to Arthur W Rucker, Secretary, Royal Society | 26 June 1899 |
| MM/17/88 | Letter from Joseph Larmor to Arthur W Rucker, Secretary, Royal Society | 29 June 1899 |
| MM/17/67 | Letter from Karl Pearson to Arthur W Rucker, Secretary, Royal Society | 22 October 1900 |
| MM/17/56 | Letter from Karl Pearson to AW Rucker, Secretary, Royal Society | 15 October 1897 |
| NLB/23/2/92 | Copy letter from Arthur William Rucker, to Dr F W Edridge Green, Hendon, N.W. | 25 June 1901 |
| NLB/18/306 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker | 21 February 1899 |
| NLB/18/317 | Copy letter from Arthur William Rucker, to C T R Wilson | 22 February 1899 |
| NLB/15/765 | Copy letter from Arthur William Rucker, to J Erskine Murray, 40 Montgomerie Drive, Glasgow | 3 December 1897 |
| NLB/15/586 | Copy letter from Arthur William Rucker, to Mr V H Veeley | 1 November 1897 |
| NLB/18/16 | Copy letter from Arthur William Rucker, to [Professor H H] Turner | 22 December 1898 |
| RR/10/254 | Referee's report by Arthur William Rucker, on a paper 'Some observations on the amount of light reflected and transmitted by certain kinds of glass' by John Conroy | 19 December 1888 |
| NLB/16/640 | Copy letter from Arthur William Rucker, to Professor G H Darwin, Fellow of the Royal Society | 10 May 1898 |
| NLB/16/644 | Copy letter from Arthur William Rucker, to [Major] McMahon | 12 May 1898 |
| MS/817 | Letters of the Rucker family | 1894-1920 |
| NLB/18/121 | Copy letter from Arthur William Rucker, to Professor G Carey Foster | 18 January 1899 |
| NLB/25/430 | Copy letter from Robert William Frederick Harrison, to Sir Arthur William Rucker, Fellow of the Royal Society | 4 November 1902 |
| NLB/16/234 | Copy letter from Robert William Frederick Harrison, to A E Tutton, 17 Bardwell Road, Oxford | 28 February 1898 |
| MC/24/140 | Letter from Arthur [William] Rücker, Everington House, Newbury, to [Joseph] Larmor, [Royal Society] | 19 September 1909 |
| NLB/40/711 | Copy letter from Robert William Frederick Harrison to Sir A [Arthur William] Rucker FRS | 22 July 1909 |
| NLB/16/26 | Copy letter from Arthur William Rucker, to [Professor Karl] Pearson | 14 January 1898 |
| NLB/2/393 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 29 May 1888 |
| NLB/4/157 | Copy letter from Herbert Rix, to Professor Arthur William Rucker | 26 February 1890 |
| NLB/2/781 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 6 November 1888 |
| AP/67/3/2 | Unpublished correspondence, regarding 'On the chief line of the spectrum of the nebulae [in Orion]' from Arthur W [William] Rucker to Herbert Rix | 2 February 1890 |
| NLB/4/225 | Copy letter from Herbert Rix, to Professor Arthur William Rucker | 18 March 1890 |
| NLB/2/910 | Copy letter from Herbert Rix, to Professor Arthur Rücker, Fellow of the Royal Society | 18 December 1888 |
| NLB/4/513 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 23 June 1890 |
| NLB/4/375 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 5 May 1890 |
| NLB/4/479 | Copy letter from Herbert Rix, to Professor Arthur William Rucker | 11 June 1890 |
| NLB/3/174 | Copy letter from Herbert Rix, to Professor Arthur William Rücker, Fellow of the Royal Society | 4 April 1889 |
| NLB/4/678 | Copy letter from Herbert Rix, to Professor Arthur William Rucker care of Mrs Heaton, Claremont, Leeds | 19 September 1890 |
| NLB/3/217 | Copy letter from Herbert Rix, to Professor Arthur William Rücker, Fellow of the Royal Society | 12 April 1887 |
| NLB/3/406 | Copy letter from Herbert Rix, to Professor Arthur William Rücker, Fellow of the Royal Society | 1 June 1889 |
| NLB/4/1070 | Copy letter from Herbert Rix, to Dr Armstrong, Professor Arthur William Rucker and Professor Edwin Ray Lankester | 12 January 1891 |
| NLB/3/515 | Copy letter from Herbert Rix, to Professor Arthur William Rücker | 1 July 1889 |
| NLB/11/36 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 5 April 1895 |
| NLB/3/581 | Copy letter from Herbert Rix, to Francis Galton, Fellow of the Royal Society, Chairman of Kew Committee | 18 July 1889 |
| NLB/3/627 | Copy letter from an unknown correspondent, to Messrs West, Newman & Company | 25 July 1889 |
| NLB/3/631 | Copy letter from an unknown correspondent, to Mr Collings, 172 Strand | 26 July 1889 |
| NLB/6/170 | Copy letter from Michael Foster, to the Secretary to the Governing Body, Rugby School | 16 March 1892 |
| NLB/3/758 | Copy letter from an unknown correspondent, to Messrs West, Newman & Company, 54 Hatton Garden | 2 October 1889 |
| NLB/3/952 | Copy letter from Herbert Rix, to Sir James Cockle, Fellow of the Royal Society | 22 November 1889 |
| NLB/3/1100 | Copy letter from an unknown correspondent, to Mr Collings | 10 January 1890 |
| NLB/3/1034 | Copy letter from Herbert Rix, to [John William Strutt] Lord Rayleigh, [Royal Society] | 17 December 1889 |
| NLB/5/117 | Copy letter from an unknown correspondent, to Messrs West, Newman & Company, 54 Hatton Garden | 24 March 1891 |
| NLB/5/15 | Copy letter from Herbert Rix, to Professor William Edward Ayrton, Fellow of the Royal Society, 7 Horbury Crescent, Notting Hill, W. | 18 February 1891 |
| NLB/6/864 | Copy letter from Herbert Rix, to Messrs Few & Company | 26 July 1892 |
| NLB/6/825 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 20 July 1892 |
| NLB/18/666 | Copy letter from Robert William Frederick Harrison, to Professor Schuster, Fellow of the Royal Society | 18 April 1899 |
| NLB/7/1079 | Copy letter from Herbert Rix, to Messrs Harrison & Sons | 27 June 1893 |
| NLB/7/264 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 7 January 1893 |
| NLB/5/854 | Copy letter from an unknown correspondent, to Messrs Harrison & Sons | 4 November 1891 |
| NLB/5/1151 | Copy letter from Herbert Rix, to Professor Arthur Rücker, [Fellow of the Royal Society] | 16 January 1892 |
| NLB/5/889 | Copy letter from Michael Foster, to Professor Arthur William Rücker, Fellow of the Royal Society | 10 November 1891 |
| NLB/19/498 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 16 October 1899 |
| NLB/5/962 | Copy letter from Herbert Rix, to Professor Arthur Rücker, [Fellow of the Royal Society] | 24 November 1891 |
| NLB/5/858 | Copy letter from Michael Foster, to General Sir Henry Ponsonby | 5 November 1891 |
| NLB/7/817 | Copy letter from Herbert Rix, to Mr Collings | 2 May 1893 |
| NLB/7/834 | Copy letter from Herbert Rix, to Mr Collings | 5 May 1893 |
| NLB/7/761 | Copy letter from Herbert Rix, to Professor Arthur William Rucker | 20 April 1893 |
| NLB/21/486 | Copy letter from Arthur William Rucker, to George Carey Foster, [Fellow of the Royal Society] | 27 November 1900 |
| NLB/20/670 | Copy letter from Arthur William Rucker, to Dr H M Vernon, 3 Bevington Road, Oxford | 14 June 1900 |
| NLB/18/616 | Copy letter from Arthur William Rucker, to [A A C] Swinton | 11 April 1899 |
| NLB/10/15 | Copy letter from A H White, to Lord Rayeligh [John William Strutt] | 22 August 1894 |
| NLB/14/875 | Copy letter from Arthur William Rucker, to His Serene Highness, Prince William Augustus Edward of Saxe-Weimar-Eisenach | 31 May 1897 |
| NLB/21/304 | Copy telegram from Arthur William Rucker, to Lord Rayleigh [John William Strutt], Terling, Essex | [25 October 1900] |
| NLB/9/725 | Copy letter from Michael Foster, to [Arthur William] Rucker, [Fellow of the Royal Society] | 6 July 1894 |
| NLB/10/291 | Copy letter from Herbert Rix, to Lord Rayleigh [John William Strutt], Fellow of the Royal Society | 5 November 1894 |
| NLB/18/487 | Copy letter from Theodore E James, to W L Fox, Hon. Sec. Observatory Committee, Ro. Cornwall Polytechnic Society, Falmouth | 21 March 1899 |
| NLB/16/355 | Copy letter from Arthur William Rucker, to [T G] Bonney | 21 March 1898 |
| NLB/10/584 | Copy letter from Herbert Rix, to Professor Michael Foster | 31 December 1894 |
| NLB/8/1046 | Copy letter from Herbert Rix, to Professor Armstrong, Fellow of the Royal Society | 15 February 1894 |
| NLB/10/793 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 6 February 1895 |
| NLB/20/338 | Copy letter from Arthur William Rucker, to Captain Edmond Herbert Grove-Hills, [Fellow of the Royal Society] | 26 March 1900 |
| NLB/10/923 | Copy letter from Herbert Rix, to Alfred Edward Howard Tutton, 65 Frithville Gardens, Shepherd's Bush, W. | 8 March 1895 |
| NLB/9/451 | Copy letter from Herbert Rix, to Professor Michael Foster, Secretary, Royal Society | 19 May 1894 |
| NLB/18/19 | Copy letter from Robert William Frederick Harrison, to the Secretary, H.M. Office of Works | 23 December 1898 |
| NLB/11/14 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 3 April 1895 |
| NLB/9/252 | Copy letter from Herbert Rix, to Robert Henry Scott, Fellow of the Royal Society | 23 April 1894 |
| NLB/9/362 | Copy letter from Herbert Rix, to Captain Ettrick William Creak, Fellow of the Royal Society, The Admiralty, S.W. | 7 May 1894 |
| NLB/11/183 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 9 May 1895 |
| NLB/16/532 | Copy letter from Arthur William Rucker, to [Darwin] | 26 April 1898 |
| NLB/18/551 | Copy letter from Arthur William Rucker, to Major MacMahon, Fellow of the Royal Society | 27 March 1899 |
| NLB/11/493 | Copy letter from Michael Foster, to Professor Arthur William Rucker, Fellow of the Royal Society | 12 July 1895 |
| NLB/23/2/127 | Copy letter from Arthur William Rucker, to Wyndham Rowland Dunstan, Fellow of the Royal Society and T A Henry | 4 November 1901 |
| NLB/9/949 | Copy letter from Herbert Rix, to M Walter Brown, Secretary, Federated Institution of Mining Engineers, Newcastle-upon-Tyne | 31 July 1894 |
| NLB/11/566 | Copy letter from Herbert Rix, to Messrs Harrison & Sons | 24 July 1895 |
| NLB/18/327 | Copy letter from Arthur William Rucker, to Mr Mallock | 22 February 1899 |
| NLB/11/675 | Copy letter from A H White, to Professor Arthur William Rucker, Fellow of the Royal Society | 11 September 1895 |
| NLB/11/610 | Copy letter from A H White, to Professor Alfred William Rucker | 8 August 1895 |
| NLB/14/703 | Copy letter from an unknown correspondent, to Messrs Harrison & Sons | 30 April 1897 |
| NLB/14/442 | Copy letter from Arthur William Rucker, to Dr John Hopkinson, Fellow of the Royal Society | 12 March 1897 |
| NLB/9/761 | Copy letter from Herbert Rix, to Professor Michael Foster, Secretary, Royal Society | 10 July 1894 |
| NLB/14/640 | Copy letter from Arthur William Rucker, to Arthur Schuster, Fellow of the Royal Society | 12 April 1897 |
| NLB/11/953 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 8 November 1895 |
| NLB/19/284 | Copy letter from Arthur William Rucker, to Professor James Alfred Ewing and W Rosenhain, [Fellows of the Royal Society] | 26 July 1899 |
| NLB/13/60 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 3 June 1896 |
| NLB/13/2 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 27 May 1896 |
| NLB/13/15 | Copy letter from Robert William Frederick Harrison, to Messrs Cassell & Company, Limited, La Belle Sauvage, Ludgate Hill, E.C. | 28 May 1896 |
| NLB/16/402 | Copy letter from Arthur William Rucker, to Turner | 29 March 1898 |
| NLB/13/204 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 1 July 1896 |
| NLB/12/147 | Copy letter from Herbert Rix, to Professor Arthur Rucker, Fellow of the Royal Society | 18 December 1895 |
| NLB/13/214 | Copy letter from Michael Foster, to Sir Clements Roberts Markham | 3 July 1896 |
| NLB/16/134a | Copy letter from Robert William Frederick Harrison, to [R T] Glazebrook, [Fellow of the Royal Society] | 8 February 1898 |
| NLB/23/2/121 | Copy letter from Arthur William Rucker, to Captain [Henry George] Lyons, [Fellow of the Royal Society], Survey Department, Cairo | 4 November 1901 |
| NLB/13/238 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker | 8 July 1896 |
| NLB/18/831 | Copy letter from Arthur William Rucker, to E Tremlett Carter, Editor of "The Electrician" | 29 May 1899 |
| NLB/13/281 | Copy letter from Robert William Frederick Harrison, to Messrs Harrison & Sons | 21 July 1896 |
| NLB/12/693 | Copy letter from Herbert Rix, to Professor Arthur Rucker, Fellow of the Royal Society | 13 April 1896 |
| NLB/13/482 | Copy letter from an unknown correspondent, to Messrs Harrison & Sons | 25 September 1896 |
| NLB/12/609 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 23 March 1896 |
| NLB/12/587 | Copy letter from Herbert Rix, to Messrs Harrison & Sons | 18 March 1896 |
| NLB/16/614 | Copy letter from Arthur William Rucker, to Darwin | 9 May 1898 |
| NLB/12/717 | Copy letter from an unknown correspondent, to Messrs Harrison & Sons | 17 April 1896 |
| NLB/14/641 | Copy letter from Arthur William Rucker, to Professor Armstrong, Fellow of the Royal Society | 12 April 1897 |
| NLB/13/693 | Copy letter from Michael Foster, to Sir Douglas Strutt Galton, British Association for the Advancement of Science | 5 November 1896 |
| NLB/15/589 | Copy letter from Arthur William Rucker, to Professor David Ferrier, Fellow of the Royal Society, and Dr Turner | 3 November 1897 |
| NLB/23/2/124 | Copy letter from Arthur William Rucker, to Louis Napoleon George Filon, King's College | 4 November 1901 |
| NLB/13/786 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 25 November 1896 |
| NLB/13/798 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 27 November 1896 |
| NLB/13/831 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 4 December 1896 |
| NLB/13/803 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 27 November 1896 |
| NLB/14/564 | Copy letter from Arthur William Rucker, to Dr Victor Alexander Haden Horsley, [Fellow of the Royal Society] | 28 March 1897 |
| NLB/14/53 | Copy letter from Robert William Frederick Harrison, to Professor George Howard Darwin, Fellow of the Royal Society | 18 December 1896 |
| NLB/14/699 | Copy letter from Arthur William Rucker, to His Royal Highness, Prince William Augustus Edward of Saxe-Weimar-Eisenach | 27 April 1897 |
| NLB/14/183 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society, 7 Harvey Road, Cambridge | 18 January 1897 |
| NLB/16/556 | Copy letter from Robert William Frederick Harrison, to R T Glazebrook, Fellow of the Royal Society | 28 April 1898 |
| NLB/23/2 | Copy letters sent from Royal Society administrative staff and officers | 23 January 1901-10 November 1901 |
| NLB/19 | New Letter Book volume 19, copy letters sent from Royal Society administration | 1 June 1899-10 January 1900 |
| NLB/14/155 | Copy letter from Arthur William Rucker, to Joseph Norman Lockyer, [Fellow of the Royal Society] | 13 January 1897 |
| NLB/14/60 | Copy letter from Robert William Frederick Harrison, to Professor George Howard Darwin, Fellow of the Royal Society | 19 December 1896 |
| NLB/14/182 | Copy letter from Arthur William Rucker, to William Henry Wesley | 17 January 1897 |
| NLB/14/698 | Copy letter from Arthur William Rucker, to His Highness the Duke of Teck [Francis Paul Charles Louis Alexander] | 27 April 1897 |
| NLB/14/329 | Copy letter from Arthur William Rucker, to Professor Victor Alexander Haden Horsley, Fellow of the Royal Society | 18 February 1897 |
| NLB/14/371 | Copy letter from Arthur William Rucker, to Surgeon-Captain Patrick Hehir, The Nizam's Medical School, Hyderabad, Deccan, India | 23 February 1897 |
| NLB/15/269 | Copy letter from Arthur William Rucker, to Sir George Baden Powell | 27 July 1897 |
| NLB/14/149 | Copy letter from Robert William Frederick Harrison, to Joseph Norman Lockyer, Fellow of the Royal Society | 12 January 1897 |
| NLB/14/484 | Copy letter from Arthur William Rucker, to George Howard Darwin, [Fellow of the Royal Society] | 18 March 1897 |
| NLB/14/540 | Copy letter from Arthur William Rucker, to Professor Arthur Mason Worthington, Fellow of the Royal Society | 25 March 1897 |
| NLB/18 | New Letter Book volume 18, copy letters sent from Royal Society administration | 21 December 1898-1 June 1899 |
| NLB/14/152 | Copy letter from Arthur William Rucker, to Professor Cargill Gilston Knott | 13 January 1897 |
| NLB/14/505 | Copy letter from Arthur William Rucker, to Dr V Harley | 22 March 1897 |
| NLB/14/156 | Copy letter from Arthur William Rucker, to Professor Charles Scott Sherrington, [Fellow of the Royal Society] | 14 January 1897 |
| NLB/14/119 | Copy letter from Arthur William Rucker, to George Udny Yule, [Fellow of the Royal Society], University College, London | 7 January 1896 |
| NLB/14/200 | Copy letter from Arthur William Rucker, to Professor John Ambrose Fleming, Fellow of the Royal Society | 20 January 1897 |
| NLB/14/174 | Copy letter from Theodore E James, to Professor Arthur William Rucker, Secretary, Royal Society | 16 January 1897 |
| NLB/14/492 | Copy letter from Arthur William Rucker, to Dr Meyer Wildermann | 19 March 1897 |
| NLB/14/203 | Copy letter from Arthur William Rucker, to Thomas Andrews, Fellow of the Royal Society | 21 January 1897 |
| NLB/14/225 | Copy letter from Robert William Frederick Harrison, to Joseph Wilson Swan, Fellow of the Royal Society | 25 January 1897 |
| NLB/14/186 | Copy letter from Theodore E James, to Professor Michael Foster, Secretary, Royal Society | 18 January 1897 |
| NLB/14/123 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 11 January 1897 |
| NLB/14/211 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 22 January 1897 |
| NLB/14/151 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 13 January 1897 |
| NLB/14/201 | Copy letter from Arthur William Rucker, to Professor Oliver Lodge, Fellow of the Royal Society | 20 January 1897 |
| NLB/14/290 | Copy letter from Robert William Frederick Harrison, to Professor Arthur Mason Worthington, Fellow of the Royal Society, 6 Osborne Villas, Devonport | 10 February 1897 |
| NLB/14/229 | Copy letter from Arthur William Rucker, to Arthur Mason Worthington, [Fellow of the Royal Society] | 26 January 1897 |
| NLB/20/717 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 22 June 1900 |
| NLB/14/278 | Copy letter from Robert William Frederick Harrison, to Professor Arthur Mason Worthington, Fellow of the Royal Society, 6 Osborne Villas, Devonport | 8 February 1897 |
| NLB/14/276 | Copy letter from Robert William Frederick Harrison, to Charles Thomas Heycock, Fellow of the Royal Society | 8 February 1897 |
| NLB/14/292 | Copy letter from Arthur William Rucker, to Professor Charles Scott Sherrington, Fellow of the Royal Society | 10 February 1897 |
| NLB/14/327 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 18 February 1897 |
| NLB/14/285 | Copy letter from Joseph Lister, to the Most Honorable Marquis of Salisbury [Robert Arthur Talbot Gascoyne-Cecil], Fellow of the Royal Society | 9 February 1897 |
| NLB/14/393 | Copy letter from Arthur William Rucker, to Mr Darwin | 3 March 1897 |
| NLB/14/431 | Copy letter from Arthur William Rucker, to Professor William Ramsay, Fellow of the Royal Society | 10 March 1897 |
| NLB/14/397 | Copy letter from Arthur William Rucker, to Joseph Norman Lockyer | 4 March 1897 |
| NLB/14/594 | Copy letter from Arthur William Rucker, to Michael Foster [Secretary, Royal Society] | 5 April 1897 |
| RR/15/276 | Letter from Arthur William Rucker,on a paper 'The application of the kinetic theory of gases to to electric, magnetic & optical properties of diatomic gases' by George Walker Walker to the author | 3 May 1901 |
| NLB/14/485 | Copy letter from Arthur William Rucker, to Professor Osborne Reynolds, Fellow of the Royal Society | 18 March 1897 |
| NLB/14/379 | Copy letter from Henry Edward Armstrong, to Professor [Friedrich Wilhelm Georg] Kohlrausch | 1 March 1897 |
| NLB/14/432 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 10 March 1897 |
| NLB/14/433 | Copy letter from Arthur William Rucker, to James Alfred Ewing, [Fellow of the Royal Society] | 10 March 1897 |
| NLB/14/416 | Copy letter from Robert William Frederick Harrison, to John C Dobbie, Messrs A Dobbie & Son, Admiralty Buidlings, 45 Clyde Place, Glasgow | 8 March 1897 |
| NLB/14/535 | Copy letter from Arthur William Rucker, to Walter Heape, [Fellow of the Royal Society], Heyroun, Chaucer Road, Cambridge | 24 March 1897 |
| NLB/14/443 | Copy letter from Arthur William Rucker, to John Henry Poynting, [Fellow of the Royal Society] | 12 March 1897 |
| NLB/14/423 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary, Royal Society | 8 March 1897 |
| NLB/14/444 | Copy letter from Arthur William Rucker, to Professor Joseph Reynolds Green, Fellow of the Royal Society | 12 March 1897 |
| NLB/14/479 | Copy letter from Arthur William Rucker, to Professor Alfred George Greenhill, [Fellow of the Royal Society] | 17 March 1897 |
| NLB/14/459 | Copy letter from Arthur William Rucker, to Richard Tetley Galzebrook, Fellow of the Royal Society | 15 March 1897 |
| NLB/14/591 | Copy letter from Michael Foster and Arthur William Rucker, to the Secretaries of the Royal Astronomical Society | 2 April 1897 |
| NLB/14/480 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, [Fellow of the Royal Society] | 17 March 1897 |
| NLB/14/440 | Copy letter from Arthur William Rucker, to Dr Meyer Wildermann | 12 March 1897 |
| NLB/14/470 | Copy letter from Arthur William Rucker, to Lord Rayleigh [John William Strutt], [Fellow of the Royal Society] | 16 March 1897 |
| NLB/14/635 | Copy letter from Arthur William Rucker, to [George Howard] Darwin, [Fellow of the Royal Society] | 12 April 1897 |
| NLB/14/542 | Copy letter from Arthur William Rucker, to Gilbert Thomas Walker, John Alexander McClelland and Charles Thomas Rees Wilson | 26 March 1897 |
| RR/15/269 | Letter from William Augustus Tilden, on a paper 'Some physical properties of nitric acid solutions' by Victor Herbert Veley and J J Manley to Arthur William Rucker | 18 May 1901 |
| NLB/14/488 | Copy letter from Arthur William Rucker, to Mr Frank McClean, [Fellow of the Royal Society] | 18 March 1897 |
| NLB/14/592 | Copy letter from Michael Foster and Arthur William Rucker, to the Secretary, the Mineralogical Society | 2 April 1897 |
| NLB/14/544 | Copy letter from Arthur William Rucker, to Mr Frank McClean, [Fellow of the Royal Society] | 26 March 1897 |
| NLB/14/526 | Copy letter from Robert William Frederick Harrison, to Dr John Hopkinson, Fellow of the Royal Society | 24 March 1897 |
| NLB/20/666 | Copy letter from Arthur William Rucker, to Dr Augustus Desire Waller, Fellow of the Royal Society | 14 June 1900 |
| NLB/14/894 | Copy letter from Arthur William Rucker, to Thomas Andrews, Fellow of the Royal Society | 1 June 1897 |
| NLB/18/553 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | [27 March 1899] |
| NLB/14/717 | Copy letter from Robert Frederick William Harrison, to Professor George Howard Darwin, Fellow of the Royal Society | 3 May 1897 |
| NLB/17 | New Letter Book volume 17, copy letters sent from Royal Society administration | 29 June 1898-20 December 1898 |
| NLB/14/573 | Copy letter from Robert William Frederick Harrison, to Professor Arthur Mason Worthington, Fellow of the Royal Society | 30 March 1897 |
| RR/13/165 | Letter from Thomas Andrews, on his paper 'On micro-physical structure of pure gold and micro-segregation in gold alloys' to William Arthur Rucker, Secretary of the Royal Society | 10 February 1898 |
| NLB/14/605 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 7 April 1897 |
| NLB/23/2/119 | Copy letter from Arthur William Rucker, to William Napier Shaw, Fellow of the Royal Society and R Waley Cohen | 4 November 1901 |
| NLB/14/672 | Copy letter from Arthur William Rucker, to R W Parker, Honorary Secretary of the Royal Medical and Chirurgical Society | 28 April 1897 |
| NLB/16/577 | Copy letter from Arthur William Rucker, to V H Veley, Fellow of the Royal Society | 2 May 1898 |
| NLB/14/622 | Copy letter from Arthur William Rucker, to Professor George Howard Darwin, Fellow of the Royal Society | 9 April 1897 |
| NLB/14/830 | Copy letter from Robert William Frederick Harrison, to Dr John Allen Harker, [Fellow of the Royal Society], 22 Mount Ararat Road, Richmond, Surrey | 26 May 1897 |
| NLB/16/564 | Copy letter from Arthur William Rucker, to Professor Hall, Fellow of the Royal Society | 29 April 1898 |
| NLB/20/161 | Copy letter from Arthur William Rucker, to Professor Alfred Cardew Dixon, Queen's College, Galway | 16 February 1900 |
| NLB/14/732 | Copy letter from Arthur William Rucker, to Professor Klein | 5 May 1897 |
| NLB/15/539 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, Fellow of the Royal Society | 25 October 1897 |
| NLB/14/874 | Copy letter from Arthur William Rucker, to William Edward Ayrton, [Fellow of the Royal Society] | 31 May 1897 |
| NLB/14/734 | Copy letter from Arthur William Rucker, to Professor Gösta Mittag-Leffler, Fellow of the Royal Society | 5 May 1897 |
| NLB/14/708 | Copy letter from Arthur William Rucker, to the Secretary of Admiralty, Whitehall, S.W. | 30 April 1897 |
| NLB/14/723 | Copy letter from Arthur William Rucker, to Michael Foster [Secretary, Royal Society] | 3 May 1897 |
| NLB/14/758 | Copy letter from Arthur William Rucker, to Professor Osborne Reynolds, Fellow of the Royal Society | 11 May 1897 |
| NLB/14/724 | Copy letter from Arthur William Rucker, to George Howard Darwin, [Fellow of the Royal Society] | 3 May 1897 |
| NLB/14/745 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 8 May 1897 |
| NLB/14/806 | Copy draft letter from Arthur William Rucker, to the Sectional Committee of Physics and Chemistry referees on the Report of the Joint Permanent Eclipse Committee | nd [c 22 May 1897] |
| NLB/15/127 | Copy letter from Arthur William Rucker, to Darwin | 1 July 1897 |
| NLB/14/854 | Copy letter from Arthur William Rucker, to Arthur Schuster, [Fellow of the Royal Society] | 28 May 1897 |
| NLB/14/858 | Copy letter from Arthur William Rucker, to Silvanus Phillips Thompson, Fellow of the Royal Society, Morland, Chislett Road, West Hampstead | 28 May 1897 |
| NLB/14/878 | Copy letter from Arthur William Rucker, to Oliver Joseph Lodge, [Fellow of the Royal Society] | 1 June 1897 |
| NLB/14/844 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 27 May 1897 |
| NLB/14/869 | Copy letter from Arthur William Rucker, to Thomas Edward Stanton, [Fellow of the Royal Society] | 31 May 1897 |
| NLB/14/872 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 31 May 1897 |
| NLB/17/584 | Copy letter from an unknown correspondent, to Professor Arthur William Rucker, Secretary, Royal Society | 22 November 1898 |
| NLB/17/207 | Copy letter from Arthur William Rucker to the Secretary, Her Majesty's Office of Works | 30 August 1898 |
| NLB/16/356 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 21 March 1898 |
| NLB/23/2/89 | Copy letter from Arthur William Rucker, to Professor Conwy Lloyd Morgan, Fellow of the Royal Society | 25 June 1901 |
| NLB/15/799 | Copy letter from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society] | 11 December 1897 |
| NLB/18/285 | Copy letter from Arthur William Rucker, to [S W J] Smith | 17 February 1899 |
| RR/15/270 | Letter from Arthur William Rucker, on a paper 'Some physical properties of nitric acid solutions' by Victor Herbert Veley and J J Manley to Arthur William Rucker to Victor Herbert Veley | May 1901 |
| NLB/17/781 | Copy letter from Arthur William Rucker, to Sir John Conroy, Fellow of the Royal Society | 19 December 1898 |
| NLB/17/260 | Copy telegram from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society], Bassett Down House, Swindon | [26 September 1898] |
| NLB/19/795 | Copy letter from Arthur William Rucker, to Mr Rex | 20 December 1899 |
| NLB/15/85 | Copy letter from Arthur William Rucker, to Professor Pearson | 25 June 1897 |
| NLB/15/69 | Copy letter from Arthur William Rucker, to Captain William de Wiveleslie Abney, Fellow of the Royal Society | [June 1897] |
| NLB/15/763 | Copy letter from Arthur William Rucker, to Charles Sissmore Tomes, Fellow of the Royal Society, 9 Park Crescent, Portland Place, W. | 3 December 1897 |
| NLB/15/474 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 11 October 1897 |
| NLB/18/103 | Copy letter from Arthur William Rucker, to [S E] Spring-Rice | 16 January 1899 |
| NLB/15/70 | Copy letter from Arthur William Rucker, to S A Swan | 18 June 1897 |
| NLB/20/164 | Copy letter from Michael Foster and Arthur William Rucker, to the Meteorological Council | [16 February 1900] |
| NLB/15/117 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 30 June 1897 |
| NLB/18/811 | Copy letter from Robert William Frederick Harrison, to Professor Karl Pearson, Fellow of the Royal Society, 7 Well Road, Hampstead, N.W. | 18 May 1899 |
| NLB/18/271 | Copy letter from Robert William Frederick Harrison, to Professor H H Turner, Fellow of the Royal Society | 15 February 1899 |
| NLB/17/373 | Copy letter from Robert William Frederick Harrison, to Arthur William Rucker, Secretary, Royal Society | 19 October 1898 |
| NLB/18/759 | Copy letter from Arthur William Rucker, to Professor [A] Michelson | 9 May 1899 |
| NLB/15/585 | Copy letter from Arthur William Rucker, to Sir Charles Wilson, Fellow of the Royal Society | 1 November 1897 |
| RR/18/113 | Referee's report by Arthur William Rucker, on a paper 'On the variation of the specific heat of water, with experiments by a new method' by Hugh Lonbourne Callendar | January 1912 |
| NLB/16/25 | Copy letter from Arthur William Rucker, to [R T] Glazebrook | 14 January 1898 |
| NLB/15/60 | Copy letter from Arthur William Rucker, to Arthur Schuster, [Fellow of the Royal Society] | 15 June 1897 |
| NLB/16/738 | Copy letter from Arthur William Rucker, to the Secretaries, Joint Permanent Eclipse Committee, Royal Astronomical Society, Burlington House, W. | 27 May 1898 |
| NLB/15/48 | Copy letter from Arthur William Rucker, to Francis George Fitzgerald, [Fellow of the Royal Society] | 15 June 1897 |
| NLB/16/21 | Copy letter from Arthur William Rucker, to [A E] Tutton | 14 January 1897 [1898] |
| NLB/15/71 | Copy letter from Arthur William Rucker, to E B H Wade | 18 June 1897 |
| NLB/16/51 | Copy letter from Arthur William Rucker, to the Secretary to H.M. Treasury, Whitehall, S.W. | 21 January 1898 |
| NLB/16/612 | Copy letter from Robert William Frederick Harrison, to A E Tutton | [9 May 1898] |
| NLB/16/20 | Copy letter from Arthur William Rucker, to Henry James Chaney | 13 January 1898 |
| NLB/15/751 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary, Royal Society | 1 December 1897 |
| NLB/17/259 | Copy telegram from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society], Bassett Down House, Swindon | [26 September 1898] |
| NLB/15/513 | Copy letter from Arthur William Rucker, to Augustus Edward Hough Love, [Fellow of the Royal Society] | 19 October 1897 |
| NLB/16/576 | Copy letter from Arthur William Rucker, to Hicks | 2 May 1898 |
| NLB/21/488 | Copy letter from Arthur William Rucker, to His Excellency, The German Ambassador | 27 November 1900 |
| NLB/15/59 | Copy letter from Arthur William Rucker, to Mr Darwin | 15 June 1897 |
| NLB/15/92 | Copy letter from Arthur William Rucker, to Darwin, [Fellow of the Royal Society] | 25 June 1897 |
| NLB/15/61 | Copy letter from Arthur William Rucker, to Joseph Norman Lockyer, Fellow of the Royal Society | [June 1897] |
| NLB/15/225 | Copy letter from Arthur William Rucker, to J G Leathem, B New Court, St John's College, Cambridge | July 1897 |
| NLB/15/93 | Copy letter from Arthur William Rucker, to Joseph Norman Lockyer, [Fellow of the Royal Society]' | 25 June 1897 |
| NLB/15/110 | Copy letter from Arthur William Rucker, to Professor James Dewar, Fellow of the Royal Society | 28 June 1897 |
| NLB/15/90 | Copy letter from Arthur William Rucker, to Mr Russell | 25 June 1897 |
| NLB/15/619 | Copy letter from Robert William Frederick Harrison, to Herbert Rix | 5 November 1897 |
| NLB/15/470 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 9 October 1897 |
| NLB/15/91 | Copy letter from Arthur William Rucker, to Professor Olaus Magnus Friedrich Erdmann Henrici, [Fellow of the Royal Society] | 25 June 1897 |
| NLB/15/489 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Scalter, Fellow of the Royal Society | 13 October 1897 |
| NLB/15/116 | Copy letter from Robert William Frederick Harrison, to Dr Henry Edward Armstrong, Fellow of the Royal Society | 30 June 1897 |
| NLB/15/139 | Copy letter from Arthur William Rucker, to George Francis Fitzgerald, Fellow of the Royal Society | 6 July 1897 |
| NLB/15/566 | Copy letter from Arthur William Rucker, to Professor Welch | 29 October 1897 |
| NLB/15/241 | Copy letter from Robert William Frederick Harrison, to William Henry Wesley, Royal Astronomical Society | 22 July 1897 |
| NLB/15/224 | Copy letter from Arthur William Rucker, to William Henry Wesley | 19 July 1897 |
| NLB/15/616 | Copy letter from Arthur William Rucker, to Professor Anderson Stuart | 4 November 1897 |
| NLB/15/111 | Copy letter from Arthur William Rucker, to Professor George Downing Liveing, Fellow of the Royal Society | 28 June 1889 |
| NLB/15/546 | Copy letter from Arthur William Rucker, to Scott | 26 October 1897 |
| NLB/15/568 | Copy letter from Arthur William Rucker, to the Secretary, Her Majesty's Treasury, Whitehall, S.W. | 29 october 1897 |
| NLB/16/171 | Copy letter from Arthur William Rucker, to T Andrews, Fellow of the Royal Society | 11 February 1898 |
| NLB/16/360 | Copy letter from Arthur William Rucker, to [W H M] Christie | 22 March 1898 |
| NLB/15/162 | Copy letter from Arthur William Rucker, to Clement Lindley Wragge, Government Meteorologist, Brisbane, Queensland | 7 July 1897 |
| NLB/16/342 | Copy letter from Arthur William Rucker, to V H Veley, Fellow of the Royal Society | 18 March 1898 |
| NLB/15/166 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary, Royal Society | 7 July 1897 |
| NLB/16/565 | Copy letter from Arthur William Rucker, to Professor Klein | 29 April 1898 |
| NLB/15/475 | Copy letter from Arthur William Rucker, to Arthur Montefiore Brice | 11 October 1897 |
| NLB/16/380 | Copy letter from Robert William Frederick Harrison, to Dr T E Thorpe, Fellow of the Royal Society, 61 Ladbroke Grove, W. | 24 March 1898 |
| NLB/16/84 | Copy letter from Arthur William Rucker, to Professor Dr G Neumayer, Deutsche Seewarte, Hamburg, Germany | 27 January 1898 |
| NLB/16/98 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 31 January 1898 |
| NLB/15/461 | Copy letter from Arthur William Rucker, to Forsyth | 7 October 1897 |
| NLB/17/274 | Copy telegram from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society], Basset Down House, Swindon | 29 September 1898 |
| NLB/16/354 | Copy letter from Arthur William Rucker, to Dyer | 22 March 1898 |
| NLB/17/374 | Copy letter Arthur William Rucker, to Dr George Johnstone Stoney, [Fellow of the Royal Society] | 19 October 1898 |
| NLB/19/617 | Copy telegram from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society], Royal College of Science, South Kensington | [November 1899] |
| NLB/16/414 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Berlin | 1 April 1898 |
| NLB/17/715 | Copy telegram from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society], Royal College of Science, South Kensington | [9 December 1898] |
| NLB/15/226 | Copy letter from Arthur William Rucker, to Professor Silvanus Phillips Thompson, Fellow of the Royal Society | July 1897 |
| NLB/15/205 | Copy letter from Arthur William Rucker, to Professor George Francis Fitzgerald, Secretary Royal Society | 15 July 1897 |
| NLB/15/251 | Copy letter from Arthur William Rucker, to Captain William de Wiveleslie Abney, Fellow of the Royal Society | 23 July 1897 |
| NLB/15/249 | Copy letter from Arthur William Rucker, to Sir George Baden Powell | 23 July 1897 |
| NLB/16/223 | Copy letter from Arthur William Rucker, to Thomas Andrews, Fellow of the Royal Society | 25 February 1898 |
| NLB/16/27 | Copy letter from Arthur William Rucker, to [Prof G H] Darwin | 14 January 1898 |
| NLB/16/49 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson] | 21 January 1898 |
| NLB/15/274 | Copy letter from Arthur William Rucker, to A P Maudslay | 27 July 1897 |
| NLB/18/617 | Copy letter from Arthur William Rucker, to Professor G Carey Foster | 11 April 1899 |
| NLB/15/629 | Copy letter from Arthur William Rucker, to Sir William Henry Flower, Fellow of the Royal Society | 8 November 1897 |
| NLB/15/288 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebook, Fellow of the Royal Society, 3 Erw Villas, Penmaenmawr, North Wales | 29 July 1897 |
| NLB/16/386 | Copy letter from Michael Foster and Arthur William Rucker, to the Secretary of the Admiralty, Whitehall, S.W. | 24 March 1898 |
| NLB/16/725 | Copy letter from Arthur William Rucker, to [R T] Glazebrook, [Fellow of the Royal Society] | 24 May 1898 |
| NLB/16/97 | Copy letter from Arthur William Rucker to Lord Kelvin [William Thomson], Fellow of the Royal Society | 31 January 1898 |
| NLB/20/168 | Copy letter from Arthur William Rucker, to Professor John Walter Gregory, [Fellow of the Royal Society], The University, Melbourne, Victoria | 16 February 1900 |
| NLB/15/275 | Copy letter from Arthur William Rucker, to John Burke, the Owens College, Manchester | 26 July 1897 |
| NLB/15/326 | Copy letter from Theodore E James, to Professor Dr Hellman, Central-Institut, Berlin | 10 August 1897 |
| NLB/16/37 | Copy letter from Arthur William Rucker to Lord Kelvin [William Thomson] | 17 January 1898 |
| NLB/16/103 | Copy letter from Arthur William Rucker, to [R T] Glazebrook | 31 January 1898 |
| NLB/16/347 | Copy letter from Arthur William Rucker, to Professor J W Judd | 21 March 1898 |
| NLB/16/551 | Copy letter from Arthur William Rucker, to V H Veley, Fellow of the Royal Society | 27 April 1898 |
| NLB/15/558 | Copy letter from Arthur William Rucker, to Professor Oliver Joseph Lodge, Fellow of the Royal Society | 28 October 1897 |
| NLB/23/2/88 | Copy letter from Arthur William Rucker, to Professor William Johnson Sollas, Fellow of the Royal Society | 25 June 1901 |
| NLB/18/105 | Copy letter from Arthur William Rucker, to [W H M] Christie | 16 January 1899 |
| NLB/15/552 | Copy letter from Arthur William Rucker, to Andrew Russell Forsyth, [Fellow of the Royal Society] | 27 October 1897 |
| NLB/16/168 | Copy letter from Arthur William Rucker, to S S Hough | 14 February 1898 |
| NLB/15/456 | Copy letter from Arthur William Rucker, to Professor Silvanus Phillips Thompson, [Fellow of the Royal Society] | 6 October 1897 |
| NLB/15/463 | Copy letter from Arthur William Rucker, to Professor Silvanus Phillips Thompson, [Fellow of the Royal Society] | 7 October 1897 |
| NLB/19/133 | Copy letter from Arthur William Rucker, to Rooks Evelyn Bell Crompton, [Fellow of the Royal Society] | 27 June 1899 |
| NLB/16/546 | Copy letter from Robert William Frederick Harrison, to F J S Hopwood, Assistant Secretary, Railway Department, Board of Trade, S.W. | 27 April 1898 |
| NLB/16/638 | Copy letter from Arthur William Rucker, to [Sir Norman] Lockyer, [Fellow of the Royal Society] | 10 May 1898 |
| NLB/16/153 | Copy letter from Robert William Frederick Harrison, to R T Glazebrook, Fellow of the Royal Society | 11 February 1898 |
| NLB/15/753 | Copy letter from Arthur William Rucker, to Dr Copeland | 2 December 1897 |
| NLB/15/559 | Copy letter from Arthur William Rucker, to The Right Honourable Lord Kelvin [William Thomson], Fellow of the Royal Society | 28 October 1897 |
| NLB/16/246 | Copy letter from Arthur William Rucker, to R T Glazebrook, [Fellow of the Royal Society] | 1 March 1898 |
| NLB/15/524 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, Fellow of the Royal Society | 21 October 1897 |
| NLB/16/183 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 17 February 1898 |
| NLB/15/508 | Copy letter from Arthur William Rucker, to Andrew Russell Forsyth, [Fellow of the Royal Society] | 19 October 1897 |
| NLB/22/458 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, [Fellow of the Royal Society] | 18 May 1901 |
| NLB/15/454 | Copy letter from Arthur William Rucker, to the Honorary Secretary, the Jackson-Hamsworth Polar Expedition | 6 October 1897 |
| NLB/16/531 | Copy letter from Arthur William Rucker, to Dr H Charlton Bastian, Fellow of the Royal Society | 26 April 1898 |
| NLB/17/693 | Copy letter from Arthur William Rucker, to Mr A Mallock | 8 December 1898 |
| NLB/15/494 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 14 October 1897 |
| NLB/15/480 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 13 October 1897 |
| NLB/16/385 | Copy letter from Michael Foster and Arthur William Rucker, to Sir Arthur Godley, India Office, Whitehall, S.W. | 24 March 1898 |
| NLB/17/753 | Copy telegram from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society], Royal College of Science, South Kensington | [16 December 1898] |
| NLB/15/576 | Copy letter from Arthur William Rucker, to Professor R Copeland | 29 October 1897 |
| NLB/16/229 | Copy letter from [Robert William Frederick Harrison], to F Galton, Fellow of the Royal Society | 26 February 1898 |
| NLB/18/123 | Copy letter from Arthur William Rucker, to [Ditdler] | 18 January 1899 |
| NLB/16/339 | Copy letter from Arthur William Rucker, to Professor T G Bonney, Fellow of the Royal Society | 18 March 1898 |
| NLB/16/267 | Copy letter from Robert William Frederick Harrison, to Dr G Johnstone Stoney, Fellow of the Royal Society | 4 March 1898 |
| NLB/15/572 | Copy letter from Arthur William Rucker, to Professor Henry Edward Armstrong, [Fellow of the Royal Society] | 29 October 1897 |
| NLB/17/412 | Copy letter from Arthur William Rucker, to Professor George Howard Darwin, [Fellow of the Royal Society] | 25 October 1898 |
| NLB/16/797 | Copy letter from Arthur William Rucker, to Professor A Schuster, Fellow of the Royal Society | 10 June 1898 |
| NLB/16/47 | Copy letter from Michael Foster, to G J Symons, Fellow of the Royal Society | 21 January [1898] |
| NLB/15/621 | Copy letter from Arthur William Rucker, to William Robert Ogilvie Grant, Natural History Museum, Cromwell Road, S.W. | 5 November 1897 |
| NLB/15/570 | Copy letter from Arthur William Rucker, to the Secretaries, Joint Permanent Eclipse Committee, Royal Astronomical Society, Burlington House, W. | 29 October 1897 |
| NLB/15/595 | Copy letter from Robert William Frederick Harrison, to Dr Dukinfield Henry Scott, Fellow of the Royal Society | 2 November 1897 |
| NLB/15/610 | Copy letter from Arthur William Rucker, to Lieutenant Colonel the Right Honourable Sir Fleetwood Isham Edwards | 4 November 1897 |
| NLB/15/584 | Copy letter from Arthur William Rucker, to Dr Alexander Lockhart Gillespie | 1 November 1897 |
| NLB/15/591 | Copy letter from Robert William Frederick Harrison, to Dr Augustus Desire Waller, Fellow of the Royal Society | 1 November 1897 |
| NLB/15/599 | Copy letter from Arthur William Rucker, to Professor David Ferrier, Fellow of the Royal Society, and Dr W A Turner | 3 November 1897 |
| NLB/15/587 | Copy letter from Arthur William Rucker, to Andrew Russell Forsyth, [Fellow of the Royal Society] | 1 November 1897 |
| NLB/19/199 | Copy letter from Arthur William Rucker, to Sir John George Kerr, [Fellow of the Royal Society] | 11 July 1899 |
| NLB/19/574 | Copy letter from Arthur William Rucker, to Forsyth | 3 November 1899 |
| NLB/15/598 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 2 November 1897 |
| NLB/15/608 | Copy letter from Arthur William Rucker, to Dr John Hall Gladstone, Fellow of the Royal Society | 4 November 1897 |
| NLB/16/632 | Copy letter from Robert William Frederick Harrison, to Professor Obach, 113 Victoria Road, Old Charlton, Kent | 9 May 1898 |
| NLB/18/704 | Copy letter from Arthur William Rucker, to Sir Francis Mowatt | 26 April 1899 |
| NLB/16/338 | Copy letter from Arthur William Rucker, to Dr E Schunck, Fellow of the Royal Society | 18 March 1898 |
| NLB/16/255 | Copy letter from Arthur William Rucker, to F J S Hopwood, Assistant Secretary, (Railway Department), Board of Trade, Whitehall Gardens, S.W. | 2 March 1898 |
| NLB/15/575 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 29 October 1897 |
| NLB/16/352 | Copy letter from Arthur William Rucker, to F J S Hopwood, Board of Trade | 18 March 1898 |
| NLB/15/674 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, Fellow of the Royal Society | 15 November 1897 |
| NLB/15/597 | Copy letter from Arthur William Rucker, to William Turner Thiselton-Dyer | 2 November 1897 |
| NLB/15/623 | Copy letter from Robert William Frederick Harrison, to Dr W A Turner, 13 Queen Street, W. | 5 November 1897 |
| NLB/16/857 | Copy letter from Arthur William Rucker, to Reverend T C Porter | 21 June 1898 |
| NLB/16/332 | Copy letter from Robert William Frederick Harrison, to E F Clowes, Messrs William Clowes & Sons, Duke Street, Stamford Street, S.E. | 18 March 1898 |
| NLB/16/344 | Copy letter from Arthur William Rucker, to Professor Pearson, Fellow of the Royal Society, and L N G Filon, [Fellow of the Royal Society] | 19 March 1898 |
| NLB/15/631 | Copy letter from Arthur William Rucker, to Professor William Burnside, Fellow of the Royal Society | 8 November 1897 |
| NLB/15/833 | Copy letter from Arthur William Rucker, to George Howard Darwin, [Fellow of the Royal Society] | 20 December 1897 |
| NLB/16/340 | Copy letter from Arthur William Rucker, to W F Sheppard, 2 Temple Gardens, E.C. | 18 March 1898 |
| NLB/15/630 | Copy letter from Arthur William Rucker, to William Henry Mahoney Christie, [Fellow of the Royal Society] | 8 November 1897 |
| NLB/17/57 | Copy letter from Arthur William Rucker, to Professor John Bretland Farmer, Fellow of the Royal Society, and J L Williams | 8 July 1898 |
| NLB/15/742 | Copy letter from Arthur William Rucker, to Reverend Doctor George Salmon, Provost of Trinity College, Dublin | 29 November 1897 |
| NLB/16/455 | Copy letter from Robert William Frederick Harrison, to Captain E H Hills | 6 April 1898 |
| NLB/15/637 | Copy letter from Arthur William Rucker, to the Secretary of Her Majesty's Treasury, Whitehall, S.W. | 9 November 1897 |
| NLB/15/673 | Copy letter from Arthur William Rucker, to Major Percy Alexander MacMahon, Fellow of the Royal Society | 15 November 1897 |
| NLB/16/367 | Copy letter from Arthur William Rucker, to Christie | 23 March 1898 |
| NLB/16/369 | Copy letter from Arthur William Rucker, to the President of the Royal Astronomical Society | 23 March 1898 |
| NLB/17/356 | Copy telegram from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society], 19 Gledhow Gardens, S.W. | [18 October 1898] |
| NLB/15/685 | Copy letter from Robert William Frederick Harrison, to Dr Robert Bell, Fellow of the Royal Society, Geological Survey Office, Sussex Street, Ottawa, Canada | 16 November 1897 |
| NLB/15/738 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 29 November 1897 |
| NLB/15/689 | Copy letter from Robert William Frederick Harrison, to William Turner Thiselton-Dyer, Fellow of the Royal Society | 16 November 1897 |
| NLB/18/606 | Copy letter from Arthur William Rucker, to [Professor Karl] Pearson | 30 March 1899 |
| NLB/23/2/93 | Copy letter from Arthur William Rucker, to Dr J F Gemmill, Anatomy Department, The University, Glasgow | 25 June 1901 |
| NLB/16/403 | Copy letter from Arthur William Rucker, to R T Glazebrook, [Fellow of the Royal Society] | 29 March 1898 |
| NLB/15/672 | Copy letter from Arthur William Rucker, to Professor John Viriami Jones, Fellow of the Royal Society | 15 November 1897 |
| NLB/16/114 | Copy letter from Arthur William Rucker, to [Professor D] Reynolds | 2 February 1898 |
| NLB/15/813 | Copy letter from Arthur William Rucker, to Dr George Johnston Stoney, [Fellow of the Royal Society] | 16 December 1897 |
| NLB/15/735 | Copy letter from Robert William Frederick Harrison, to Professor Wyndham Rowland Dunstan, [Fellow of the Royal Society] | 27 November 1897 |
| NLB/15/328 | Copy letter from A H White, to Richard Tetley Glazebrook, Fellow of the Royal Society | 10 August 1897 |
| NLB/15/832 | Copy letter from Robert William Frederick Harrison, to H M Vernon, Stazione Zoologica, Naples, Italy | [20 December 1897] |
| NLB/15/722 | Copy letter from Robert William Frederick Harrison, to Professor Thomas George Bonney, Fellow of the Royal Society | 23 November 1897 |
| NLB/18/431 | Copy letter from Arthur William Rucker to Spring-Rice | 9 March 1899 |
| NLB/15/747 | Copy letter from Robert William Frederick Harrison, to Professor William Aitcheson Haswell, Fellow of the Royal Society | 1 DEcember 1897 |
| NLB/15/819 | Copy letter from Michael Foster and Arthur William Rucker, to the Executors of the late Sir William Mackinnon | 17 December 1897 |
| NLB/15/741 | Copy letter from Arthur William Rucker, to Andrew Ainslie Common, [Fellow of the Royal Society] | 29 November 1897 |
| NLB/15/739 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 29 November 1897 |
| NLB/15/462 | Copy letter from Arthur William Rucker, to Sir Edward Frankland, [Foreign Secretary, Royal Society] | 7 October 1897 |
| NLB/15/719 | Copy letter from Arthur William Rucker, to the Under Secretary of State, Colonial Office, Downing Street, S.W. | 22 November 1897 |
| NLB/15/476 | Copy letter from Arthur William Rucker, to Andrew Russell Forsyth, [Fellow of the Royal Society] | 11 October 1897 |
| NLB/15/740 | Copy letter from Arthur William Rucker, to William Henry Mahoney Christie, [Fellow of the Royal Society] | 29 November 1897 |
| NLB/16/359 | Copy letter from Arthur William Rucker, to Sir Clements R Markham, President of the Royal Geographical Society | 21 March 1898 |
| NLB/18/67 | Copy letter from Arthur William Rucker, to [R T Glazebrook], [Fellow of the Royal Society] | 9 January 1899 |
| NLB/15/816 | Copy letter from Arthur William Rucker, to Dr R Copeland care of W A Nedham, Commissioner, Nagpur | 17 December 1897 |
| NLB/16/187 | Copy letter from Arthur William Rucker, to [Dr T E] Thorpe | 18 February 1898 |
| NLB/16/496 | Copy letter from Robert William Frederick Harrison, to Thomas Andrews, Fellow of the Royal Society | 22 April 1898 |
| NLB/16/201 | Copy letter from Michael Foster, to John P Mellor, Assistant Solicitor to H.M. Treasury | 21 February 1898 |
| NLB/16/239 | Copy letter from Arthur William Rucker, to Professor W J Sollas, Fellow of the Royal Society | 1 March 1898 |
| NLB/16/184 | Copy letter from Arthur William Rucker, to [R T] Glazebrook, [Fellow of the Royal Society] | 17 February 1898 |
| NLB/16/202 | Copy letter from Michael Foster, to the Secretary to H.M. Office of Works, 12 Whitehall Place. S.W. | 21 February 1898 |
| NLB/16/459 | Copy letter from [Robert William Frederick Harrison], to Dr Michael Foster | 6 April 1898 |
| NLB/16/595 | Copy letter from Arthur William Rucker, to Hills | 5 May 1898 |
| NLB/15/840 | Copy letter from Arthur William Rucker, to Professor Alexander Onufrievitch Kowalevsky [Kowalewski], Foreign Member Royal Society | 20 December 1897 |
| NLB/16/490 | Copy letter from Arthur William Rucker, to Lord George Hamilton, H.M. Secretary of State for India | 21 April 1898 |
| NLB/16/525 | Copy letter from Michael Foster and Arthur William Rucker, to the Librarian of the University Library, Cambridge | 25 April 1898 |
| NLB/16/613 | Copy letter from Professor [Arthur William] Rucker, to A E Tutton | [9 May 1898] |
| NLB/16/560 | Copy letter from Michael Foster and Arthur William Rucker, to Bodley's Librarian, Bodleian Library, Oxford | 28 April 1898 |
| NLB/17/60 | Copy letter from Arthur William Rucker, to Francis Darwin, Fellow of the Royal Society | 8 July 1898 |
| NLB/16/561 | Copy letter from Michael Foster and Arthur William Rucker, to the Secretary, Royal College of Surgeons, Lincoln's Inn Fields, W.C. | 26 April 1898 |
| NLB/17/730 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 13 December 1898 |
| NLB/15/860 | Copy letter from Arthur William Rucker, to Professor Adolphe Hirsch, Secrétaire Perpétuel Association Géodésique Internationale Observatoire de Neuchàtel, Switzerland | 4 January 1898 |
| NLB/16/601 | Copy letter from [Arthur William] Rucker, to G J Burch | 6 May 1898 |
| NLB/15/866 | Copy letter from Robert William Frederick Harrison, to Sir George Baden-Powell, Cliffe Side, Grove Road, Bournemouth | 4 January 1898 |
| NLB/17/56 | Copy letter from Arthur William Rucker, to Edmund Taylor Whittaker, [Fellow of the Royal Society] | 8 July 1898 |
| NLB/15/896 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], [Fellow of the Royal Society] | 10 January 1898 |
| NLB/17/622 | Copy letter from Robert William Frederick Harrison, to M M Gibson, Privy Purse Office | 28 November 1898 |
| NLB/19/269 | Copy letter from Arthur William Rucker, to Professor J T Morrison | 24 July 1899 |
| NLB/17/283 | Copy telegram from Arthur William Rucker, to Professor Michael Foster, [Secretary, Royal Society], 77 Harborne Road, Birmingham | [1 October 1898] |
| NLB/17/54 | Copy letter from Arthur William Rucker, to Clinton Coleridge Farr, [Fellow of the Royal Society] | 8 July 1898 |
| NLB/16/650 | Copy letter from Arthur William Rucker, to Professor Hill | 14 May 1898 |
| NLB/17/9 | Copy letter from Robert William Frederick Harrison, to W Torpy, Her Majesty's Office of Works, Storey's Fate, Westminster, S.W. | 30 June 1898 |
| NLB/16/588 | Copy letter from Arthur William Rucker, to Professor Ryan | 4 May 1898 |
| NLB/15/895 | Copy letter from Arthur Wiliam Rucker, to James Swinburne, [Fellow of the Royal Society] | 10 January 1898 |
| NLB/16/790 | Copy letter from Arthur William Rucker, to Professor Burnside, Fellow of the Royal Society | 7 June 1898 |
| NLB/17/43 | Copy letter from Arthur William Rucker, to Mr A Mallock | 7 July 1898 |
| NLB/17/203 | Copy letter from Theodore E James, to Professor Arthur William Rucker, Fellow of the Royal Society | 25 August 1898 |
| NLB/17/44 | Copy letter from Arthur William Rucker, to William Henry Preece, Fellow of the Royal Society | 7 July 1898 |
| NLB/17/331 | Copy letter from Robert William Frederick Harrison, to Professor John Perry, [Fellow of the Royal Society] | 12 October 1898 |
| NLB/17/58 | Copy letter from Arthur William Rucker, to Professor William Mitchinson Hicks, Fellow of the Royal Society | 8 July 1898 |
| NLB/17/55 | Copy letter from Arthur William Rucker, to Vernon Herbert Blackman, [Fellow of the Royal Society] | 8 July 1898 |
| NLB/17/133 | Copy letter from Arthur William Rucker, to W L Fox, Honorary[?] Secretary of the Observatory Committee, Royal Cornwall Polytechnic Society, Falmouth | 25 July 1898 |
| NLB/17/102 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 18 July 1898 |
| NLB/16/794 | Copy letter from Arthur William Rucker, to Professor Osborne Reynolds, Fellow of the Royal Society | 10 June 1898 |
| NLB/16/798 | Copy letter from Arthur William Rucker, to Professor [H E] Armstrong, Fellow of the Royal Society | 10 June 1898 |
| NLB/16/700 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker | 21 May 1898 |
| NLB/16/671 | Copy letter from Robert William Frederick Harrison, to R T Glazebrook, Fellow of the Royal Society | 18 May 1898 |
| NLB/16/475 | Copy letter from Robert William Frederick Harrison, to Professor Roberts-Austen, Fellow of the Royal Society | 20 April 1898 |
| NLB/19/213 | Copy letter from Robert William Frederick Harrison, to Sir John Evans, Fellow of the Royal Society | 13 July 1899 |
| NLB/16/641 | Copy letter from Michael Foster and Arthur William Rucker, to Professor Dr F Leo, Konigl. Gesellschaft der Wissenschaften, Gottingen | 12 May 1898 |
| NLB/17/397 | Copy letter from Sir Arthur William Rucker, to Sir John | [21 October 1898] |
| NLB/17/111 | Copy letter from Robert William Frederick Harrison, to Lord Joseph Lister, President, Royal Society | 20 July 1898 |
| NLB/17/61 | Copy letter from Arthur William Rucker, to Joseph Ernest Petavel, [Fellow of the Royal Society] | 8 July 1898 |
| NLB/17/137 | Copy letter from Robert William Frederick Harrison, to Professor Henry Edwatf Armstrong, Fellow of the Royal Society | 25 July 1898 |
| NLB/17/144 | Copy minute of the Indian Magnetic Survey by Professor Arthur William Rucker, Secretary, Royal Society | nd [c July 1898] |
| NLB/20/19 | Copy telegram from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society], Royal College of Science | [15 January 1900] |
| NLB/18/318 | Copy letter from Arthur William Rucker, to S W J Smith | 22 February 1899 |
| NLB/17/638 | Copy letter from Arthur William Rucker, to the Chairman of the Meteorological Council | 29 November 1898 |
| NLB/17/134 | Copy letter from Arthur William Rucker, to Dr Lees | 21 July 1898 |
| NLB/17/108 | Copy letter from Arthur William Rucker, to Joseph Larmor, [Fellow of the Royal Society] | 18 July 1898 |
| NLB/17/534 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, Fellow of the Royal Society | 14 November 1898 |
| NLB/16/763 | Copy letter from Robert William Frederick Harrison, to Robert Chalmers, The Treasury, Whitehall, S.W. | 2 June 1898 |
| NLB/17/132 | Copy letter from Arthur William Rucker, to William Henry Preece, Fellow of the Royal Society | 23 July 1898 |
| NLB/17/165 | Copy letter from Robert William Frederick Harrison, to James Swinburne, [Fellow of the Royal Society], Honorary Editor of 'Science Abstracts', 66 Victoria Street, S.W. | 29 July 1898 |
| NLB/17/581 | Copy telegram from Arthur William Rucker and Michael Foster, to the Secretary, Imperial Academy of Sciences, St Petersburg | [22 November 1898] |
| NLB/16/825 | Copy letter from Arthur William Rucker, to [R T] Glazebrook, [Fellow of the Royal Society] | 16 June 1898 |
| NLB/17/245 | Copy letter from Arthur William Rucker, to Professor Mascart, [Fellow of the Royal Society] | 20 September 1898 |
| NLB/18/321 | Copy letter from Arthur William Rucker, to A A C Swinton | 22 February 1899 |
| NLB/16/812 | Copy letter from Arthur William Rucker, to Mr [H R A] Mallock | 14 June 1898 |
| NLB/17/780 | Copy letter from Arthur William Rucker, to Captain Edmond Herbert Grove-Hills, [Fellow of the Royal Society] | 19 December 1898 |
| NLB/17/244 | Copy letter from Arthur William Rucker, to General Rykatcheff | 20 September 1898 |
| NLB/17/297 | Copy letter from Arthur William Rucker, to William Edward Ayrton, [Fellow of the Royal Society] | 5 October 1898 |
| NLB/17/385 | Copy letter from Arthur William Rucker, to Mr W F Sheppard | 20 October 1898 |
| NLB/17/266 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Secretary, Royal Society] | 27 September 1898 |
| NLB/19/131 | Copy letter from Arthur William Rucker, to Joseph Norman Lockyer, [Fellow of the Royal Society] | 27 June 1899 |
| NLB/17/717 | Copy letter from Arthur William Rucker, to Professor Vaughan Harley | 9 December 1898 |
| NLB/17/289 | Copy letter from Arthur William Rucker, to Professor Jacobus Hendrik Van't Hoff, [Fellow of the Royal Society] | 3 October 1898 |
| NLB/17/275 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 29 September 1898 |
| NLB/17/353 | Copy letter from Robert William Frederick Harrison, to Professor George Howard Darwin, Fellow of the Royal Society | 17 October 1898 |
| NLB/17/302 | Copy letter from Robert William Frederick Harrison, to Dr Joseph Larmor, Fellow of the Royal Society | 6 October 1898 |
| NLB/17/354 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society, 4 Sunnyside, Prince's Park, Liverpool | 17 October 1898 |
| NLB/17/652 | Copy letter from Arthur William Rucker, to Sir Richard Strachey, Fellow of the Royal Society | 2 December 1898 |
| NLB/17/662 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 3 December 1898 |
| NLB/17/454 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 3 November 1898 |
| NLB/17/455 | Copy letter from Arthur William Rucker, to Sir William Huggins, Fellow of the Royal Society | 3 November 1898 |
| NLB/17/388 | Copy letter from Arthur William Rucker, to Dr Samuel Pierpoint Langley, Foreign Member, Royal Society | 21 October 1898 |
| NLB/17/415 | Copy letter from Arthur William Rucker, to Dr Edward Emanuel Klein, [Fellow of the Royal Society] | 25 October 1898 |
| NLB/17/453 | Copy letter from Michael Foster and Arthur William Rucker, to Lord Farrer Herschell, Marquis of Ripon [George Frederick Samuel Robinson], Marquis of Dufferin and Ava [Frederick Temple Hamilton-Temple Blackwood], Right Honourable John Morley | 3 November 1898 |
| NLB/17/379 | Copy letter from Arthur William Rucker, to Professor Christiansen | 19 October 1898 |
| NLB/17/446 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, Fellow of the Royal Society | 3 November 1898 |
| NLB/17/402 | Copy letter from Arthur William Rucker, to Professor Leo | 24 October 1898 |
| NLB/18/422 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society | 8 March 1899 |
| NLB/16/879 | Copy letter from Arthur William Rucker, to the Secretary, H.M. Office of Works, Storey's Gate, Westminster, S.W. | 25 June 1898 |
| NLB/19/139 | Copy letter from Arthur William Rucker, to William Henry Preece, [Fellow of the Royal Society] | 28 June 1899 |
| NLB/19/132 | Copy letter from Arthur William Rucker, to Alfred Edwin Howard Tutton, [Fellow of the Royal Society] | 27 June 1899 |
| NLB/17/457 | Copy letter from Arthur William Rucker, to Horace A D Seymour, Royal Mint | 3 November 1898 |
| NLB/18/320 | Copy letter from Arthur William Rucker, to Professor A C Dixon | 22 February 1899 |
| NLB/17/530 | Copy letter from Arthur William Rucker, to Professor George Howard Darwin, [Fellow of the Royal Society] | 14 November 1898 |
| NLB/16/889 | Copy letter from Arthur William Rucker, to Professor Korteweg | 28 June 1898 |
| NLB/18/191 | Copy letter from Arthur William Rucker, to Professor [F] Klein | 2 February 1899 |
| NLB/16/872 | Copy letter from Arthur William Rucker, to Professor W Ramsay, Fellow of the Royal Society | 24 June 1898 |
| NLB/17/484 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 24[?] October 1898 |
| NLB/16/875 | Copy letter from Arthur William Rucker, to Mr Francis Galton, Fellow of the Royal Society, 42 Rutland Gate, S.W. | 24 June 1898 |
| NLB/18/355 | Copy letter from Arthur William Rucker, to A Mallock | 27 February 1899 |
| NLB/16/524 | Copy letter from Michael Foster and Arthur William Rucker, to Dr Norman Moore, Honororary Secretary, Royal Medical & Chirurgical Society, 20 Hanover Square, W. | 25 April 1898 |
| NLB/16/526 | Copy letter from Michael Foster and Arthur William Rucker, to the Principal Librarian of the British Museum, Bloomsbury, W.C. | 25 April 1898 |
| NLB/16/599 | Copy letter from Michael Foster and Arthur William Rucker, to the Secretaries of the Joint Permanent Eclipse Committee, The Royal Astronomical Society, Burlington House | 6 May 1898 |
| NLB/16/792 | Copy letter from Michael Foster and Arthur William Rucker, to the Marquess of Salisbury, H.M. Secretary of State for Foreign Affairs | 7 June 1898 |
| NLB/16/854 | Copy letter from Arthur William Rucker, to H M Vernon | [21 June 1898] |
| NLB/19/179 | Copy letter from Arthur William Rucker, to Sir A Godley | 7 July 1899 |
| NLB/17/570 | Copy letter from Robert William Frederick Harrison, to the Secretary, Her Majesty's Office of Works | 18 November 1898 |
| NLB/18/20 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, [Fellow of the Royal Society] | 23 December 1898 |
| NLB/18/15 | Copy letter from Arthur William Rucker, to Professor Attfield, Fellow of the Royal Society | 22 December 1898 |
| NLB/18/54 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, Secretary of the Royal Society | 6 January 1899 |
| NLB/18/79 | Copy letter from Robert William Frederick Harrison, to Professor Christopher Addison, University College, Sheffield | 10 January 1899 |
| NLB/17/653 | Copy letter from Arthur William Rucker, to Mr A Mallock | 2 December 1898 |
| NLB/17/611 | Copy letter from Arthur William Rucker, to the Superintendent, Kew Observatory | 25 November 1898 |
| NLB/18/84 | Copy letter from Arthur William Rucker, to [Professor A R] Forsyth | 10 January 1899 |
| NLB/18/161 | Copy letter from Arthur William Rucker, to [Professor A R] Forsyth | 27 January 1899 |
| NLB/18/548 | Copy letter from Arthur William Rucker, to Professor Schuster, Fellow of the Royal Society, and T Hemsalech | 29 March 1899 |
| NLB/17/783 | Copy letter from Arthur William Rucker, to Lord George Nathaniel Curzon of Kedleston, Fellow of the Royal Society | 19 December 1898 |
| NLB/17/574 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 21 November 1898 |
| NLB/18/140 | Copy letter from Arthur William Rucker, to Professor Carey Foster, Fellow of the Royal Society | 23 January 1899 |
| NLB/17/628 | Copy letter from Robert William Frederick Harrison, to Major Percy Alexander MacMahon, Fellow of the Royal Society | 28 November 1898 |
| NLB/19/242 | Copy letter from Arthur William Rucker, to Charles Thomson Rees Wilson, [Fellow of the Royal Society] | 19 July 1899 |
| NLB/18/148 | Copy letter from Arthur William Rucker, to Professor [W E] Ayrton, Fellow of the Royal Society | 24 January 1899 |
| NLB/19/283 | Copy letter from Arthur William Rucker, to Dr John Allen Harker, [Fellow of the Royal Society] and Dr P Chappuis | 26 July 1899 |
| NLB/18/137 | Copy letter from Arthur William Rucker, to [S A] Sworn | 23 January 1899 |
| NLB/18/434 | Copy letter from Arthur William Rucker, to Professor von Baeyer | 9 March 1899 |
| NLB/20/109 | Copy letter from Arthur William Rucker, to an unknown correspondent | 1 February 1900 |
| NLB/17/631 | Copy letter from Robert William Frederick Harrison, to William Henry Preece, Fellow of the Royal Society | 28 November 1898 |
| NLB/19/115 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, [Fellow of the Royal Society] | 26 June 1899 |
| NLB/17/695 | Copy letter from Robert William Frederick Harrison, to Professor William Ramsay | 8 December 1898 |
| NLB/17/680 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebook, Fellow of the Royal Society, 4 Sunnyside, Prince's Park, Liverpool | 7 December 1898 |
| NLB/18/18 | Copy letter from Arthur William Rucker, to [A B] Kempe | 22 December 1898 |
| NLB/17/681 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 6 December 1898 |
| NLB/18/702 | Copy letter from Arthur William Rucker, to Professor J M Thomson, Fellow of the Royal Society | 26 April 1899 |
| NLB/19/655 | Copy letter from Michael Foster, to Sir Clements Robert Markham, Fellow of the Royal Society | 17 November 1899 |
| NLB/18/57 | Copy letter from Robert William Frederick Harrison, to Professor Forsyth, Fellow of the Royal Society | 7 January 1899 |
| NLB/17/660 | Copy letter from Michael Foster and Arthur William Rucker, to Monsieur le Professeur Victor Pachoutine, President de L'Academie Imperiale Militaire de Medecine, St Petersburg | 2 December 1898 |
| NLB/18/432 | Copy letter from Arthur William Rucker, to Professor M F Fitzgerald | 9 March 1899 |
| NLB/19/765 | Copy letter from Robert William Frederick Harrison, to General Richard Strachey, Fellow of the Royal Society | 13 December 1899 |
| NLB/18/151 | Copy letter from Arthur William Rucker, to S E Spring-Rice | 24 January 1899 |
| NLB/18/316 | Copy letter from [Arthur William Rucker], to Sir O Masson | 22 February 1899 |
| NLB/19/562 | Copy letter from Arthur William Rucker, to Professor Andrew Russell Forsyth, Fellow of the Royal Society | 1 November 1899 |
| NLB/18/398 | Copy letter from Arthur William Rucker, to [Professor W E] Ayrton | 3 March 1899 |
| NLB/19/784 | Copy letter from Arthur William Rucker, to Viscount Dillon, President of the Society of Antiquaries | 17 December 1899 |
| NLB/18/406 | Copy letter from Arthur William Rucker, to Professor [Karl] Pearson | 6 March 1899 |
| NLB/17/735 | Copy letter from Robert William Frederick Harrison, to Francis Galton, Fellow of the Royal Society, Chairman of the Kew Observatory | 14 December 1898 |
| NLB/19/630 | Copy letter from Arthur William Rucker, to Professor Cargill Gilston Knott, Fellow of the Royal Society | 12 November 1899 |
| NLB/17/760 | Copy letter from Michael Foster and Arthur William Rucker, to Monsieur le Secretaire du Conseil, Académie Impériale Militaire de Médecine, St Petersburg | 19 December 1898 |
| NLB/18/199 | Copy letter from Arthur William Rucker, to Professor G Carey Foster | 3 February 1899 |
| NLB/17/752 | Copy letter from Robert William Frederick Harrison, to Professor George Howard Darwin, Fellow of the Royal Society | 15 December 1898 |
| NLB/17/718 | Copy letter from Arthur William Rucker, to Professor Arthur Smithells [Fellow of the Royal Society], H M Dason and H A Wilson | [9 December 1898] |
| NLB/17/761 | Copy letter from Michael Foster and Arthur William Rucker, to Monsieur le Secretaire, Académie Impériale des Sciences, St Petersburg | 19 December 1898 |
| NLB/17/766 | Copy letter from an unknown correspondent, to to Professor Arthur William Rucker, Secretary, Royal Society | 17 December 1898 |
| NLB/19/14 | Copy letter from Robert William Frederick Harrison, to Admiral Sir William James Lloyd Wharton, Fellow of the Royal Society | 2 June 1899 |
| NLB/19/196 | Copy letter from Arthur William Rucker, to Dr Charles Chree, Fellow of the Royal Society | 11 July 1899 |
| NLB/17/790 | Copy letter from Arthur William Rucker, to Professor William Ramsay, [Fellow of the Royal Society] | 20 December 1898 |
| NLB/17/779 | Copy letter from Arthur William Rucker, to Mr Turner | 19 December 1898 |
| NLB/17/778 | Copy letter from Michael Foster and Arthur William Rucker, to Captain Edmond Herbert Grove-Hills, [Fellow of the Royal Society] Secretary, Joint Permanent Eclipse Committee, Royal Astronomical Society | 20 December 1898 |
| NLB/17/782 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, Fellow of the Royal Society | 19 December 1898 |
| NLB/19/261 | Copy letter from Arthur William Rucker, to Professor George Howard Darwin, [Fellow of the Royal Society] | 21 July 1899 |
| NLB/19/4 | Copy letter from Robert William Frederick Harrison, to Professor Oliver Joseph Lodge, Fellow of the Royal Society, 2 Grove Parl, Liverpool | 1 June 1899 |
| NLB/19/50 | Copy letter from Michael Foster and Arthur William Rucker, to the Secretaries of the Joint Permanent Eclipse Committee | 6 June 1899 |
| NLB/18/164 | Copy letter from Arthur William Rucker, to Professor Callendar, Fellow of the Royal Society | 27 January 1899 |
| NLB/18/319 | Copy letter from Arthur William Rucker, to Dr D H Scott, Fellow of the Royal Society, Old Palace, Richmond | [22 February 1899] |
| NLB/19/207 | Copy letter from Robert William Frederick Harrison, to the Senior Secretary of the Royal Society | 12 July 1899 |
| NLB/18/726 | Copy letter from Arthur William Rucker, to Professor H S Hele Shaw | 1 May 1899 |
| NLB/21/392 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | [November 1900] |
| NLB/19/107 | Copy letter from Arthur William Rucker, to Professor Arthur Mason Worthington, Fellow of the Royal Society | 21 June 1899 |
| NLB/19/110 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 23 June 1899 |
| NLB/18/550 | Copy letter from Arthur William Rucker, to J Muir | 28 March 1899 |
| NLB/19/40 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 6 June 1899 |
| NLB/19/51 | Copy letter from Arthur William Rucker, to E Tremlett Carter, Editor, 'The Electrician', 1-3 Salisbury Court, Fleet Street, E.C. | 8 June 1899 |
| NLB/19/83 | Copy letter from Arthur William Rucker, to Professor Arthur Mason Worthington, [Fellow of the Royal Society] | 15 June 1899 |
| NLB/19/138 | Copy letter from Arthur William Rucker, to Joseph Norman Lockyer, [Fellow of the Royal Society] | 28 June 1899 |
| NLB/18/149 | Copy letter from Arthur William Rucker, to Professor [A R] Forsyth, [Fellow of the Royal Society] | 24 January 1899 |
| NLB/18/188 | Copy letter from Arthur William Rucker, to the Secretary to H.M. Treasury, Whitehall, S.W. | 2 February 1899 |
| NLB/18/213 | Copy letter from Arthur William Rucker, to [Dr T E] Thorpe | 7 February 1899 |
| NLB/19/250 | Copy letter from Arthur William Rucker, to Professor Cargill Gilston Knott, [Fellow of the Royal Society] | 19 July 1899 |
| NLB/18/461 | Copy letter from Arthur Willaim Rucker [and Robert William Frederick Harrison], to the Secretary to H.M. Treasury, Whitehall, S.W. | 14 March 1899 |
| NLB/19/135 | Copy letter from Arthur William Rucker, to Dr Joseph Larmor, [Fellow of the Royal Society] | 27 June 1899 |
| NLB/19/192 | Copy letter from Arthur William Rucker, to Sir John Evans, [Fellow of the Royal Society] | 11 July 1899 |
| NLB/19/191 | Copy letter from Arthur William Rucker and Michael Foster, to the Secretaries of the Royal Geographical Society | 11 July 1899 |
| NLB/19/252 | Copy letter from Robert William Harrison, to Professor George Carey Foster, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 19 July 1899 |
| NLB/19/195 | Copy letter from Arthur William Rucker, to the Right Honourable Viscount Dillon, President of the Society of Antiquaries | 11 July 1899 |
| NLB/18/760 | Copy letter from Arthur William Rucker, to Lord Rayleigh | 9 May 1899 |
| NLB/18/216 | Copy letter from Arthur William Rucker, to [Professor T G] Bonney | 7 February 1899 |
| NLB/18/341 | Copy letter from Arthur William Rucker, to Lord Lister | 24 February 1899 |
| NLB/18/333 | Copy letter from Arthur William Rucker, to Professor [F] Klein | 23 February 1899 |
| NLB/18/281 | Copy letter from Michael Foster and Arthur William Rucker, to Dr T E Thorpe, Fellow of the Royal Society, Treasurer of the Kelvin Portrait Fund | 16 February 1899 |
| NLB/18/545 | Copy letter from Arthur William Rucker, to General-Major M Rykatcheff, Observatoire Physique Central, St Petersburg, Russia | 28 March 1899 |
| NLB/18/549 | Copy letter from Arthur William Rucker, to A E Tutton | 28 March 1899 |
| NLB/18/297 | Copy letter from Arthur William Rucker, to Professor [F] Klein | 20 February 1899 |
| NLB/18/264 | Copy letter from Arthur William Rucker, to Professor [F] Klein | 14 February 1899 |
| NLB/19/262 | Copy letter from Robert William Harrison, to Sir Michael Foster, Secretary, Royal Society | 21 July 1899 |
| NLB/19/243 | Copy letter from Arthur William Rucker, to Professor Arthur Mason Worthington, Fellow of the Royal Society | 19 July 1899 |
| NLB/18/278 | Copy letter from Arthur William Rucker, to W H Mallock | 17 February 1899 |
| NLB/52/348 | Copy letter from Arthur Schuster, Secretary of the Royal Society; to Lady Rucker, wife of the late Sir Arthur Rucker | 12 November 1915 |
| NLB/19/263 | Copy letter from Arthur William Rucker and Michael Foster, to Herrn Professor Diels, Vositz Secretar der K P Akademie der Wissenschaften, Berlin | 20 July 1899 |
| NLB/19/268 | Copy letter from Arthur William Rucker, to George Howard Darwin, [Fellow of the Royal Society] | 24 July 1899 |
| NLB/18/332 | Copy letter from Michael Foster and Arthur William Rucker, to the Secretaries of the Royal Astronomical Society, Burlington House, W. | 22 February 1899 |
| NLB/18/354 | Copy letter from Arthur William Rucker, to [Professor J] Perry | Undated |
| NLB/19/444 | Copy telegram from Arthur William Rucker, to Lord Joseph Lister, President, Royal Society | [5 October 1899] |
| NLB/19/321 | Copy letter from Robert William Frederick Harrison, to Professor Dr Diels, Bureau der Konigl, Akademie der Wissenschaften, Universitatsstrasse 8, Berlin, N.W. | 4 August 1899 |
| NLB/23/2/87 | Copy letter from Arthur William Rucker, to R C Punnett, 83 North Street, St Andrews | 25 June 1901 |
| NLB/18/442 | Copy letter from Arthur William Rucker, to [G J] Burch | 10 March 1899 |
| NLB/18/552 | Copy letter from Arthur William Rucker, to Professor Boyce and Professor Warrington | 27 March 1899 |
| NLB/18/855 | Copy letter from Robert William Frederick Harrison, to Dr F W Mott, Fellow of the Royal Society | 31 May 1899 |
| NLB/18/352 | Copy letter from Arthur William Rucker, to Professor Carey Foster, Fellow of the Royal Society | 27 February 1899 |
| NLB/19/443 | Copy letter from Arthur William Rucker, to Monsieur Dr C H Guillaume | 5 October 1899 |
| NLB/20/415 | Copy letter from Robert William Frederick Harrison, to K Foster Morley, 5 Lyndhurst Road, Hampstead | 24 April 1900 |
| NLB/18/393 | Copy letter from Arthur William Rucker, to Rev W Graham | 3 March 1899 |
| NLB/19/328 | Copy letter from Arthur William Rucker, to Ernest Alfred Thompson Wallis Budge | 8 August 1899 |
| NLB/18/547 | Copy letter from Robert William Frederick Harrison, to Professor [William Arthur] Rucker | 28 March 1899 |
| NLB/19/357 | Copy letter from Arthur William Rucker, to Dr Ernest Alfred Thompson Wallis Budge | 22 August 1899 |
| NLB/18/581 | Copy letter from Robert William Frederick Harrison, to Lord Lister, President of the Royal Society | 6 April 1899 |
| NLB/19/557 | Copy telegram from Robert William Frederick Harrison, to Michael Foster, [Fellow of the Royal Society], New Museum, Cambridge | [November 1899] |
| NLB/19/211 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 13 July 1899 |
| NLB/19/349 | Copy letter from Theodore E James, to Professor Karl Pearson, Fellow of the Royal Society | 21 August 1899 |
| NLB/19/342 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 11 August 1899 |
| NLB/18/404 | Copy letter from Robert William Frederick Harrison, to Dr J Scott Keltie, Secretary, Royal Geographical Society | 6 March 1899 |
| NLB/19/356 | Copy letter from Arthur William Rucker, to F S Huckett | 23 August 1899 |
| NLB/18/357 | Copy letter from Arthur William Rucker, to [Professor G C] Foster | 27 February 1899 |
| NLB/19/384 | Copy letter from Theodore E James, to Professor Raphael Meldola, Fellow of the Royal Society | 11 September 1899 |
| NLB/19/197 | Copy letter from Arthur William Rucker, to Dr Robert Henry Scott, Fellow of the Royal Society | 11 July 1899 |
| NLB/18/381 | Copy letter from Michael Foster and Arthur William Rucker, to the Reverend Godfrey B Lee, Warden of Winchester College | 2 March 1899 |
| NLB/21/355 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 3 November 1900 |
| NLB/18/394 | Copy letter from R Chapman, Dr C Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 3 March 1899 |
| NLB/19/422 | Copy letter from Robert William Frederick Harrison, to Lord George Nathaniel Curzon of Kedleston, Viceroy of India | 28 September 1899 |
| NLB/20/174 | Copy telegram from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society], Royal College of Science, S.W. | [17 February 1900] |
| NLB/18/613 | Copy letter from Arthur William Rucker, to [Professor Karl] Pearson | 11 April 1899 |
| NLB/19/429 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 30 September 1899 |
| NLB/19/470 | Copy letter from Robert William Frederick Harrison, to George Robert Milne Murray, Fellow of the Royal Society | 10 October 1899 |
| NLB/19/472 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society, Hotel zur Rose, Wiesbaden, Germany | 10 October 1899 |
| NLB/20/435 | Copy letter from Arthur William Rucker, to Edgar Philip Perman | 25 April 1900 |
| NLB/19/506 | Copy letter from Arthur William Rucker, to Sir Clements Robert Markham, [Fellow of the Royal Society] | 18 October 1899 |
| NLB/19/576 | Copy letter from Arthur William Rucker, to Forsyth | 3 November 1899 |
| NLB/18/481 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, Secretary of the Royal Society | 17 March 1899 |
| NLB/18/822 | Copy letter from Arthur William Rucker, to Professor A K Huntingdon | 19 May 1899 |
| NLB/18/263 | Copy letter from Arthur William Rucker, to Geheimrath A Ritter von Baeyer | 14 February 1899 |
| NLB/18/230 | Copy letter from Michael Foster and Arthur William Rucker, to Geheimrath M V Pettenkofer, Prasident, K B Akademie der Wissenschaften, Munich | 8 February 1899 |
| NLB/19/601 | Copy letter from Michael Foster, to M le Dr Charles Edouard Guillaume, Pavillon de Breteuil, Sevres, France | 7 November 1899 |
| NLB/18/265 | Copy letter from Michael Foster and Arthur William Rucker, to Geheimrath C v Voit, Secretar, K B Akademie der Wissenschaften, Munich | 13 February 1899 |
| NLB/19/577 | Copy letter from Arthur William Rucker, to Sir Joseph Lister, President, Royal Society | 3 November 1899 |
| NLB/18/460 | Copy letter from Arthur William Rucker, to the Secretary, H.M. Treasury, S.W. | 14 March 1899 |
| NLB/18/488 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, [Fellow of the Royal Society] | 20 March 1899 |
| NLB/19/514 | Copy letter from Arthur William Rucker, to Arthur Schuster, [Fellow of the Royal Society] | 19 October 1899 |
| NLB/19/616 | Copy letter from Robert William Frederick Harrison, to W Steadman Aldis | 10 November 1899 |
| NLB/19/546 | Copy letter from Arthur William Rucker, to Edwin Ray Lankester, [Fellow of the Royal Society] | 30 October 1899 |
| NLB/19/578 | Copy letter from Arthur William Rucker, to Joseph Ernest Petavel, [Fellow of the Royal Society], 34 Abingdon Mansions, Kensington, W. | 3 November 1899 |
| NLB/19/595 | Copy letter from Arthur William Rucker, to the Under Secretary of State for India, India Office, Whitehall, S.W. | 7 November 1899 |
| NLB/19/777 | Copy letter from Robert William Frederick Harrison, to Professor Henry Edward Armstrong, Fellow of the Royal Society | 15 December 1899 |
| NLB/18/763 | Copy letter from Arthur William Rucker, to Sir Courtenay Boyle | 9 May 1899 |
| NLB/22/752 | Copy letter from unknown correspondent, to Professor [Arthur William] Rucker, Fellow of the Royal Society | 10 July 1901 |
| NLB/21/521 | Copy letter from Arthur William Rucker, to Professor Arthur Gamgee, Fellow of the Royal Society | 3 December 1900 |
| NLB/18/746 | Copy letter from [Arthur William] Rucker, to [Michael] Foster, Nine Wells, Great Shelford, Cambridge | 5 May 1899 |
| NLB/19/679 | Copy letter from Arthur William Rucker, to Professor H Dixon, Fellow of the Royal Society | 21 November 1899 |
| NLB/18/664 | Copy letter from Robert William Frederick Harrison, to Sir John Conroy, Fellow of the Royal Society, Balliol College, Oxford | 18 April 1899 |
| NLB/19/606 | Copy letter from Arthur William Rucker, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 8 November 1899 |
| NLB/18/683 | Copy letter from Arthur William Rucker, to Dr Eduard Suess, Kais. Akademie der Wissenschaften, Vienna | 20 April 1899 |
| NLB/19/622 | Copy letter from Arthur William Rucker, to the Secretary, the Joint Scholarships Board, 27 Norfolk Street, Strand, W.C. | 10 November 1899 |
| NLB/19/678 | Copy letter from Arthur William Rucker, to Robert John Strutt, [Fellow of the Royal Society] | 21 November 1899 |
| NLB/20/277 | Copy letter from Arthur William Rucker, to William Ashwell Shenstone, [Fellow of the Royal Society] | 10 March 1900 |
| NLB/22/581 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, Fellow of the Royal Society | 8 June 1901 |
| NLB/18/696 | Copy letter from Arthur William Rucker, to Principal Small | 24 April 1899 |
| NLB/19/671 | Copy letter from Robert William Frederick Harrison, to Professor Arthur Schuster, Fellow of the Royal Society | 21 November 1899 |
| NLB/19/695 | Copy letter from Arthur William Rucker, to Professor Arthur Auwers, [Fellow of the Royal Society], Akademie der Wissenschaften, Berlin | 24 November 1899 |
| NLB/18/682 | Copy letter from Michael Foster and Arthur William Rucker, to Ferdinand Freiherr v. Richthofen, Vorsitzender der Gesellschaft fur Erdkunde, Berlin | 20 April 1899 |
| NLB/20/153 | Copy letter from Arthur William Rucker, to Alexander Blackie William Kennedy, [Fellow of the Royal Society] | 15 February 1900 |
| NLB/18/844 | Copy letter from an unknown correspondent, to Professor [Michael] Foster, Secretary of the Royal Society | 30 May 1899 |
| NLB/19/771 | Copy letter from Arthur William Rucker, to Arthur Schuster, Fellow of the Royal Society | 14 December 1899 |
| NLB/23/2/118 | Copy letter from Arthur William Rucker, to Professor R W Wood, University of Wisconsin | 4 November 1901 |
| NLB/20/519 | Copy letter from [Robert William Frederick Harrison], to Professor Arthur William Rucker, Secretary, Royal Society | 12 May 1900 |
| NLB/18/761 | Copy letter from Arthur William Rucker, to Sir William Crookes, Fellow of the Royal Society | 9 May 1899 |
| NLB/19/816 | Copy letter from Robert William Frederick Harrison, to W H Thelwall, 4 Huron Road, Balham, S.W. | 2 January 1900 |
| NLB/20/663 | Copy letter from Arthur William Rucker, to Alfred Edward Howard Tutton, [Fellow of the Royal Society] | 14 June 1900 |
| NLB/18/832 | Copy letter from Arthur William Rucker, to the Secretary to H.M. Office of Works, Storey's Gate, Westminster, S.W. | 29 May 1899 |
| NLB/18/764 | Copy letter from Arthur William Rucker, to Mr [F] Galton, Chairman of the Kew Observatory Committee | 9 May 1899 |
| NLB/20/108 | Copy letter from Arthur William Rucker, to Robert F Strong | 1 February 1900 |
| NLB/19/806 | Copy letter from Arthur William Rucker, to Sir Joseph Norman Lockyer, Fellow of the Royal Society | 22 December 1899 |
| NLB/19/817 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 3 January 1900 |
| NLB/19/668 | Copy letter from Arthur William Rucker, to Arthur Schuster, [Fellow of the Royal Society] | 21 November 1899 |
| NLB/20/163 | Copy letter from Arthur William Rucker, to Professor William Augutus Tilden, Fellow of the Royal Society | 16 February 1900 |
| NLB/19/745 | Copy letter from Arthur William Rucker, to Sir Richard Strachey, Fellow of the Royal Society | 11 December 1899 |
| NLB/20/158 | Copy letter from Arthur William Rucker, to Professor George Carey Forsyth, [Fellow of the Royal Society] | 17 February 1900 |
| NLB/18/821 | Copy letter from Arthur William Rucker, to Professor J A Ewing, Fellow of the Royal Society | 19 May 1899 |
| NLB/18/627 | Copy letter from an unknown correspondent, to Professor Michael Foster, Secretary of the Royal Society | 12 April 1899 |
| NLB/19/815 | Copy letter from Robert William Frederick Harrison, to Professor Alfred William Rucker, Secretary, Royal Society | 2 January 1900 |
| NLB/20/336 | Copy letter from Arthur William Rucker, to Percy Alexander McMahon, [Fellow of the Royal Society] | 26 March 1900 |
| NLB/23/2/101 | Copy letter from Arthur William Rucker, to George Udny Yule, 43 Heathhurst Road, Hampstead, N.W. | 25 June 1901 |
| NLB/18/854 | Copy letter from Robert William Frederick Harrison, to Professor R Threlfall | 31 May 1899 |
| NLB/19/852 | Copy letter from Arthur William Rucker, to General Richard Strachey, Fellow of the Royal Society | 8 January 1900 |
| NLB/20/664 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 14 June 1900 |
| NLB/18/841 | Copy letter from Arthur William Rucker, to Professor Diels, Vorsitz. Secretar der K.P. Akademie der Wissenschaften, Berlin | 30 May 1899 |
| NLB/18/643 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary of the Royal Society | 14 April 1899 |
| NLB/18/563 | Copy letter from Robert William Frederick Harrison, to Professor G Carey Foster, Fellow of the Royal Society | 29 March 1899 |
| NLB/20/53 | Copy letter from Arthur William Rucker, to William H Thelwall | 23 January 1900 |
| NLB/19/854 | Copy letter from Robert William Frederick Harrison, to Professor John Perry, Fellow of the Royal Society | 8 January 1900 |
| NLB/18/686 | Copy letter from Arthur William Rucker, to [Professor G H] Darwin | 21 April 1899 |
| NLB/20/355 | Copy letter from an unknown correspondent, to Professor Arthur William Rucker, Secretary, Royal Society | 31 March 1900 |
| NLB/20/417 | Copy letter from Robert William Frederick Harrison, to John Graham Kerr, [Fellow of the Royal Society], Christ's College, Cambridge | 24 April 1900 |
| NLB/18/703 | Copy letter from Arthur William Rucker, to [Professor G C] Foster | 26 April 1899 |
| NLB/20/7 | Copy letter from Robert William Frederick Harrison, to Arthur William Rucker, Secretary, Royal Society | 12 January 1900 |
| NLB/18/698 | Copy letter from Robert William Frederick Harrison, to Professor G Carey Foster, Fellow of the Royal Society | 24 April 1899 |
| NLB/18/583 | Copy letter from Robert William Frederick Harrison, to Professor [George] Carey Foster | 6 April 1899 |
| NLB/20/351 | Copy letter from Arthur William Rucker, to Miss Maria Dawson, Botanical Laboratory, Cambridge | 29 March 1900 |
| NLB/18/786 | Copy letter from Robert William Frederick Harrison, to Professor G H Darwin, Fellow of the Royal Society | 12 May 1899 |
| NLB/18/641 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, Secretary of the Royal Society | 14 April 1899 |
| NLB/18/741 | Copy letter from Robert William Frederick Harrison, to Professor John M Thomson, Fellow of the Royal Society, 85 Addison Road, W. | 2 May 1899 |
| NLB/20/92 | Copy letter from Lord Rayleigh [John William Strutt], Fellow of the Royal Society | 30 January 1900 |
| NLB/18/776 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary [of the Royal Society] | 10 May 1899 |
| NLB/20/349 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 30 March 1900 |
| NLB/20/107 | Copy letter from Arthur William Rucker, to W H Thelwall | 1 February 1900 |
| NLB/20/205 | Copy letter from Robert William Frederick Harrison, to Professor Andrew Russell Forsyth, [Fellow of the Royal Society], Chairman of the Mathematics Committee | 23 February 1900 |
| NLB/18/559 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary of the Royal Society | 29 March 1899 |
| NLB/18/705 | Copy letter from Robert William Frederick Harrison, to Sir Francis Mowatt, H.M. Treasury, Whitehall, S.W. | 26 April 1899 |
| NLB/18/574 | Copy letter from Robert William Frederick Harrison, to Professor G Carey Foster, Fellow of the Royal Society | 5 April 1899 |
| NLB/18/693 | Copy letter from Robert William Frederick Harrison, to Professor G Carey Foster, Fellow of the Royal Society | 22 April 1899 |
| NLB/20/151 | Copy letter from Robert William Frederick Harrison, to Dr Maxwell Simpson, Fellow of the Royal Observatory | 15 February 1900 |
| NLB/20/141 | Copy letter from Robert William Frederick Harrison, to Professor Karl Pearson, Fellow of the Royal Society | 12 February 1900 |
| NLB/20/189 | Copy letter from Robert William Frederick Harrison, to Professor Oliver Joseph Lodge, Fellow of the Royal Society | 20 February 1900 |
| NLB/18/621 | Copy letter from Michael Foster and Arthur William Rucker, to the Under Secretary of State for Foreign Affairs | 13 April 1899 |
| NLB/18/688 | Copy letter from Arthur William Rucker and Charles H Read, to Sir Francis Mowatt, Secretary to Her Majesty's Treasury | 22 April 1899 |
| NLB/20/135 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 10 February 1900 |
| NLB/20/123 | Copy letter from Arthur William Rucker, to Andrew Russell Forsyth, [Fellow of the Royal Society] | 7 February 1900 |
| NLB/20/224 | Copy letter from Arthur William Rucker, to W H Thelwall | 28 February 1900 |
| NLB/20/669 | Copy letter from Arthur William Rucker, to Herrn Professor Dr Paul Ehrlich, Westendstrasse, 62, Frankfort-on-Main | 14 June 1900 |
| NLB/20/122 | Copy letter from Arthur William Rucker and Michael Foster, to the Secretaries of the Königl Preuss Akademie der Wissenschaften, Berlin | 6 February 1900 |
| NLB/20/241 | Copy letter from Arthur William Rucker, to Andrew Russell Forsyth, [Fellow of the Royal Society] | 5 March 1900 |
| NLB/20/502 | Copy letter from Arthur William Rucker, to Hugh Longbourne Callendar, [Fellow of the Royal Society] | 7 May 1900 |
| NLB/23/2/97 | Copy letter from Arthur William Rucker, to Professor George Howard Darwin, Fellow of the Royal Society | 25 June 1901 |
| NLB/20/283 | Copy letter from Sir Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 12 March 1900 |
| NLB/19/450 | Copy letter from Robert William Frederick Harrison, to Professor Forsyth | 5 October 1899 |
| NLB/20/327 | Copy letter from Arthur William Rucker, to Sir Joseph Norman Lockyer, Fellow of the Royal Society | 23 March 1900 |
| NLB/20/196 | Copy letter from Robert William Frederick Harrison, to Alfred Bray Kempe, Treasurer, Royal Society | 21 February 1900 |
| NLB/20/226 | Copy letter from Arthur William Rucker, to Professor Alfred Cardew Dixon, [Fellow of the Royal Society] | 28 February 1900 |
| NLB/23/1/306 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 23 October 1901 |
| NLB/20/245 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 6 March 1900 |
| NLB/15/809 | Copy letter from Arthur William Rucker, to the Secretary to the Board of Trade, Whitehall, S.W. | 13 December 1897 |
| NLB/20/298 | Copy letter from Arthur William Rucker, to Sir Thomas Henry Sanderson, Under Secretary of State for Foreign Affairs, the Foreign Office, S.W. | 13 March 1900 |
| NLB/20/668 | Copy letter from Arthur William Rucker, to Professor Alfred Cardew Dixon, Queen's College, Galway | 14 June 1900 |
| NLB/20/343 | Copy letter from Arthur William Rucker, to Dr Hobson | 28 March 1900 |
| NLB/20/492 | Copy letter from Robert William Frederick Harrison, to Captain Edmond Herbert Grove-Hills | 5 May 1900 |
| NLB/20/328 | Copy letter from Arthur William Rucker, to Sir John Bennet Lawes, and Sir Joseph Henry Gilbert, Fellows of the Royal Society | 23 March 1900 |
| NLB/20/335 | Copy letter from Arthur William Rucker, to Augustus Edward Hough Love, [Fellow of the Royal Society] | 26 March 1900 |
| NLB/20/471 | Copy letter from Arthur William Rucker, to Andrew Ainslie Common, [Fellow of the Royal Society] | 30 April 1900 |
| NLB/20/667 | Copy letter from Arthur William Rucker, to Dr Leonard [Erskine] Hill, [Fellow of the Royal Society], Jasmine Cottage, Frognal, Hampstead, N.W. | 14 June 1900 |
| NLB/20/356 | Copy letter from Arthur William Rucker and Michael Foster, to Robert Arthur Talbot Gascoyne-Cecil, Marquis of Salisbury | 30 March 1900 |
| NLB/21/110 | Copy letter from Robert William Frederick Harrison, to F W Edrige-Green, Hatchcrof House, Hendon, N.W. | 30 July 1900 |
| NLB/20/451 | Copy letter from Arthur William Rucker, to Captain Edmond Herbert Grove-Hills, [Fellow of the Royal Society] | 26 April 1900 |
| NLB/20/429 | Copy letter from Robert William Frederick Harrison, to Sir Michael Foster, Secretary, Royal Society | 25 April 1900 |
| NLB/20/750 | Copy letter from Arthur William Rucker, to the Chairman, the Orient Steam Navigation Company | 26 June 1900 |
| NLB/20/489 | Copy letter from Robert William Frederick Harrison, to Professor Minchin, Fellow of the Royal Society | 4 May 1900 |
| NLB/20/427 | Copy letter from Robert William Frederick Harrison, to Dr Thomas Edward Thorpe, Foreign Secretary, Royal Society | 25 April 1900 |
| NLB/20/467 | Copy letter from Arthur William Rucker, to Sir T H Sanderson, Foreign Office, S.W. | 30 April 1900 |
| NLB/20/505 | Copy letter from Arthur William Rucker, to General Sir Robert Biddulph, Governor and Commander in Chief, Gibraltar | 8 May 1900 |
| NLB/20/503 | Copy letter from Arthur William Rucker, to the Secretary of State for the Colonies | 6 May 1900 |
| NLB/20/556 | Copy letter from Robert William Frederick Harrison, to William Napier Shaw, Secretary, Meteorological Office, 63 Victoria Street, S.W. | 22 May 1900 |
| NLB/20/450 | Copy letter from Arthur William Rucker, to Mr Andrew Ainslie Common, [Fellow of the Royal Society] | 26 April 1900 |
| NLB/20/438 | Copy letter from Arthur William Rucker, to Michael Foster, [Fellow of the Royal Society] | 25 April 1900 |
| NLB/20/567 | Copy letter from Arthur William Rucker, to Alfred Edward Howard Tutton, Fellow of the Royal Society | 22 May 1900 |
| NLB/20/665 | Copy letter from Arthur William Rucker, to Dr Charles Immanuel Forsyth Major, [Fellow of the Royal Society], British Museum (Natural History), Cromwell Road, S.W. | 14 June 1900 |
| NLB/21/27 | Copy letter from Robert William Frederick Harrison, to William Henry Mahoney Christie, Fellow of the Royal Society, Astronomer Royal | 18 July 1900 |
| NLB/21/491 | Copy telegram from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society], 'Scientist', London | [28 November 1900] |
| NLB/20/611 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, [Fellow of the Royal Society] | 31 May 1900 |
| NLB/20/720 | Copy letter from Robert William Frederick Harrison, to the Editor of 'The Standard', St Bride Street, Ludgate Circus, E.C. | 23 June 1900 |
| NLB/20/736 | Copy letter from Robert William Frederick Harrison, to W L Fox, Honorary Secretary, Royal Cornwall Polytechnical Society, Falmouth | 27 June 1900 |
| NLB/23/2/109 | Copy letter from Arthur William Rucker, to Victor Herbert Veley, Fellow of the Royal Society and J J Manley | 9 July 1901 |
| NLB/20/729 | Copy letter from Robert William Frederick Harrison, to Dr Thomas Edward Thorpe, Foreign Secretary, Royal Society | 26 June 1900 |
| NLB/20/749 | Copy letter from Arthur William Rucker, to the Under Secretary of State for Foreign Affairs | 26 June 1900 |
| NLB/21/411 | Copy letter from Arthur William Rucker, to Dr Edridge-Green | [15 November 1900] |
| NLB/21/360 | Copy letter from Arthur William Rucker, to Professor Alfred Newton, Fellow of the Royal Society | 5 November 1900 |
| NLB/20/768 | Copy letter from Arthur William Rucker, to the Under Secretary of State for Foreign Affairs | 5 July 1900 |
| NLB/21/70 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 24 July 1900 |
| NLB/21/201 | Copy letter from Robert William Frederick Harrison, to Arthur William Rucker, Fellow of the Royal Society | 25 September 1900 |
| NLB/21/570 | Copy letter from Arthur William Rucker, to Major Percy Alexander MacMahon, Fellow of the Royal Society | 11 December 1900 |
| NLB/21/568 | Copy letter from Arthur William Rucker, to George Udny Yule, [Fellow of the Royal Society], Examination Department, City & Guilds Institute, Exhibition Road, S.W. | 11 December 1900 |
| NLB/21/361 | Copy letter from Arthur William Rucker, to Sir Percy Alexander MacMahon, Fellow of the Royal Society | 5 November 1900 |
| NLB/22/670 | Copy letter from Arthur [William] Rucker, to the Director of the Bureau International des Poids et Mesures, Sevres | June 1901 |
| NLB/23/2/63 | Copy letter from Arthur William Rucker, to Dr Harold A Wilson, Cavendish Laboratory, Cambridge | 3 May 1901 |
| NLB/23/1/431 | Copy telegram from Michael Foster, to Arthur William Rucker, [Fellow of the Royal Society], 19 Gledhow Gardens, South Kensington | 12 November 1901 |
| NLB/22/400 | Copy letter from Arthur [William] Rucker, to Professor [Henry Alexander] Miers, Fellow of the Royal Society | 7 May 1901 |
| NLB/21/310 | Copy letter from Michael Foster and Arthur William Rucker, to Sir William Huggins, Fellow of the Royal Society | 26 October 1900 |
| NLB/21/412 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, [Fellow of the Royal Society] | [15 November 1900] |
| NLB/21/453 | Copy letter from Arthur William Rucker, to Principal C Lodge | 19 November 1900 |
| NLB/21/322 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 30 October 1900 |
| NLB/23/2/106 | Copy letter from Arthur William Rucker, to Dukinfield Henry Scott, Fellow of the Royal Society | 9 July 1901 |
| NLB/21/569 | Copy letter from Arthur William Rucker, to Dr Alice Lee and Professor Karl Pearson, [Fellow of the Royal Society] | 11 December 1900 |
| NLB/22/456 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, Fellow of the Royal Society | 18 May 1901 |
| NLB/23/1/228 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 10 October 1901 |
| NLB/23/1/390 | Copy letter from an unknown correspondent, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 5 November 1901 |
| NLB/22/671 | Copy letter from Arthur [William] Rucker, to [Victor Herbert] Veley, [Fellow of the Royal Society] | [June 1901] |
| NLB/21/445 | Copy letter from Arthur William Rucker, to Lord Esher | 19 November 1900 |
| NLB/22/604 | Copy letter from Arthur [William] Rucker, to Robert Bellamy Clifton, [Fellow of the Royal Society] | 11 June 1901 |
| NLB/22/359 | Copy letter from Arthur [William] Rucker, to Sir [George Gabriel] Stokes, Fellow of the Royal Society | 30 April 1901 |
| NLB/21/544 | Copy letter from Michael Foster and Arthur William Rucker, to the President of the Royal Geographical Society, [Sir Clements Robert Markham, Fellow of the Royal Society] | 5 December 1900 |
| NLB/22/447 | Copy letter from Arthur [William] Rucker, to W Williams | 16 May 1901 |
| NLB/22/448 | Copy letter from Arthur [William] Rucker, to [James] Wimshurst, Fellow of the Royal Society | 16 May 1901 |
| NLB/22/431 | Copy letter from Arthur [William] Rucker, to Professor [Karl] Pearson, Fellow of the Royal Society | [May 1901] |
| NLB/22/449 | Copy letter from Arthur [William] Rucker, to Professor [William Augustus] Tilden | 16 May 1901 |
| NLB/21/489 | Copy letter from Arthur William Rucker, to His Excellencey the French Ambassador | 27 November 1900 |
| NLB/21/528 | Copy letter from Arthur William Rucker, to Professor George Howard Darwin, [Fellow of the Royal Society] | 3 December 1900 |
| NLB/21/636 | Copy letter from Arthur William Rucker, to Professor Jagadis Chunder Bose, 33 Powis Square, W. | 20 December 1900 |
| NLB/21/520 | Copy letter from Arthur William Rucker, to Sir Clements Robert Markham, Fellow of the Royal Society | 3 December 1900 |
| NLB/21/573 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, [Fellow of the Royal Society] | [12 December 1900] |
| NLB/21/571 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, Fellow of the Royal Society | 11 December 1900 |
| NLB/23/2/98 | Copy letter from Arthur William Rucker, to Professor [Augustus Edward Hough] Love, Fellow of the Royal Society | 25 June 1901 |
| NLB/23/2/107 | Copy letter from Arthur William Rucker, to Dr Charles James Martin, Fellow of the Royal Society | 9 July 1901 |
| NLB/21/525 | Copy letter from Arthur William Rucker and Michael Foster, to Sir Clements Robert Markham, Fellow of the Royal Society, President of the Royal Geographical Society | 3 December 1900 |
| NLB/21/541 | Copy letter from Arthur William Rucker, to Robert Chalmers | 6 December 1900 |
| NLB/21/632 | Copy letter from Arthur William Rucker, to Professor William Ramsay, Fellow of the Royal Society | 20 December 1900 |
| NLB/21/543 | Copy letter from Arthur William Rucker to Sir Clements Robert Markham, [Fellow of the Royal Society], President of the Royal Geographical Society | 7 December 1900 |
| NLB/22/489 | Copy letter from Arthur [William] Rucker, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 22 May 1901 |
| NLB/21/523 | Copy letter from Arthur William Rucker, to Professor Jagadis Chunder Bose, [Fellow of the Royal Society] | 3 December 1900 |
| NLB/23/2/64 | Copy letter from Arthur William Rucker, to C E S Phillips, Castle House, Shooter's Hill, Kent | 3 May 1901 |
| NLB/21/572 | Copy letter from Arthur William Rucker, to Dr F W Edridge-Green | 11 December 1900 |
| NLB/22/654 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker | 21 June 1901 |
| NLB/22/620 | Copy letter from Arthur [William] Rucker, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | 14 June 1901 |
| NLB/22/689 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, [Fellow of the Royal Society] | 26 June 1901 |
| NLB/23/2/114 | Copy letter from Arthur William Rucker, to Captain Henry George Lyons, [Fellow of the Royal Society] | 30 July 1901 |
| NLB/23/2/117 | Copy letter from Arthur William Rucker, to Dr W E Adeney, The Royal University of Ireland, Dublin | 1 November 1901 |
| NLB/23/2/128 | Copy letter from Arthur William Rucker, to William Watson, Fellow of the Royal Society | 4 November 1901 |
| NLB/22/734 | Copy letter from Arthur William Rucker, to [Robert Bellamy] Clifton, [Fellow of the Royal Society] | 8 July 1901 |
| NLB/22/735 | Copy letter from Arthur William Rucker, to Sir William Huggins | 1 July 1901 |
| NLB/23/2/125 | Copy letter from Arthur William Rucker, to B D Steele | 4 November 1901 |
| NLB/22/834 | Copy letter from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society] | 26 July 1901 |
| NLB/23/2/95 | Copy letter from Arthur William Rucker, to Dr Frederick Walter Mott, Fellow of the Royal Society and Professor William Dobinson Halliburton, Fellow of the Royal Society | 25 June 1901 |
| NLB/23/2/94 | Copy letter from Arthur William Rucker, to Alfred Edwin Howard Tutton, Fellow of the Royal Society | 25 June 1901 |
| NLB/20/167 | Copy letter from Arthur William Rucker, to Dr Keith Monsarrat, Pathological Laboratory, University College, Liverpool | 16 February 1900 |
| NLB/22/791 | Copy letter from Arthur William Rucker, to William Leighton Jordan | 17 July 1901 |
| NLB/23/2/122 | Copy letter from Arthur William Rucker, to Professor George Downing Liveing, Fellow of the Royal Society and Professor James Dewar, Fellow of the Royal Society | 4 November 1901 |
| NLB/23/2/123 | Copy letter from Arthur William Rucker, to Sir [Joseph] Norman Lockyer, Fellow of the Royal Society | 4 November 1901 |
| NLB/23/2/108 | Copy letter from Arthur William Rucker, to Albert Charles Seward, Fellow of the Royal Society and Miss Elizabeth Dale | 9 July 1901 |
| NLB/23/1/327 | Copy letter from an unknown correspondent, to Professor Arthur William Rucker, Fellow of the Royal Society | 25 October 1901 |
| NLB/23/2/100 | Copy letter from Arthur William Rucker, to Francis Cranmer Penrose, Fellow of the Royal Society | 25 June 1901 |
| NLB/23/2/65 | Copy letter from Arthur William Rucker, to G W Walker, Trinity College, Cambridge | 3 May 1901 |
| NLB/23/1/328 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 25 October 1901 |
| NLB/23/2/90 | Copy letter from Arthur William Rucker, to Dr Reginald Clay, Wandsworth Technical Institute | 25 June 1901 |
| NLB/23/1/271 | Copy letter from [Robert William Frederick Harrison], to Professor Arthur William Rucker, Secretary, Royal Society | 18 October 1901 |
| NLB/23/2/99 | Copy letter from Arthur William Rucker, to James Muir, 189 Renfrew St, Glasgow | 20 June 1901 |
| NLB/23/2/110 | Copy letter from Arthur William Rucker, to B T P Barker, 5 The Causeway, Cambridge | 15 July 1901 |
| NLB/23/2/61 | Copy letter from Sir Michael Foster and Arthur William Rucker, to The President of the Royal Meteorological Society | 29 April 1901 |
| NLB/23/2/78 | Copy letter from Sir Michael Foster and Arthur William Rucker, to Professor [Edward Bagnall] Poulton and Captain [Thomas Henry] Tizard, [Fellow of the Royal Society] | 7 June 1901 |
| NLB/23/1/232 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 14 October 1901 |
| NLB/23/2/129 | Copy letter from Arthur William Rucker, to William Watson, [Fellow of the Royal Society] | 4 November 1901 |
| NLB/23/2/126 | Copy letter from Arthur William Rucker, to Professor Karl Pearson, [Fellow of the Royal Society] | 4 November 1901 |
| NLB/18/428 | Copy letter from Robert William Frederick Harrison, to Professor Karl Pearson, Fellow of the Royal Society | 9 March 1899 |
| NLB/23/1/213 | Copy letter from Arthur William Rucker, to Jagadis Chunder Bose, [Fellow of the Royal Society] | 8 October 1901 |
| NLB/23/2/120 | Copy letter from Arthur William Rucker, to Captain [Henry George] Lyons, [Fellow of the Royal Society] | 1 November 1901 |
| NLB/23/1/798 | Copy letter from an unknown correspondent, to Professor Arthur William Rucker, Fellow of the Royal Society | [24 January 1902] |
| NLB/23/1/417 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 11 November 1901 |
| NLB/23/1/794 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 23 January 1902 |
| NLB/25/655 | Copy letter from Robert William Frederick Harrison, to Sir Arthur William Rucker, Fellow of the Royal Society, South Kensington | 4 December 1902 |
| NLB/26/390 | Copy letter from Robert William Frederick Harrison to, Sir Arthur William Rucker, Fellow of the Royal Society | 11 March 1903 |
| NLB/27/538 | Copy letter from Robert William Frederick Harrison, to Sir Arthur Rucker, Fellow of the Royal Society | 19 October 1903 |
| NLB/22/805 | Copy letter from Arthur William Rucker, to The Under Secretary of State for India, India Office, Whitehall, S.W. | 20 July 1901 |
| NLB/27/604 | Copy letter from Robert William Frederick Harrison, to Sir Arthur William Rucker, Fellow of the Royal Society | 27 October 1903 |
| NLB/27/777 | Copy letter from Robert William Frederick Harrison, to Sir Arthur William Rucker, Fellow of the Royal Society | 27 November 1903 |
| NLB/30/251 | Copy letter from Robert William Frederick Harrison, to Sir Arthur William Rucker, Fellow of the Royal Society | 20 February 1905 |
| NLB/32/568 | Copy letter from Professor Joseph Larmor, to John William Strutt, President of the Royal Society | 5 April 1906 |
| NLB/32/617 | Copy letter from Robert William Frederick Harrison, to Professor Joseph Larmor, Secretary, Royal Society | 14 April 1906 |
| NLB/39/530 | Copy letter from Robert William Frederick Harrison to Harrison & Sons | 29 January 1909 |
| NLB/34/670 | Copy letter from Archibald Geikie, to Arthur William Rucker, Fellow of the Royal Society | 25 February 1907 |
| NLB/39/17 | Copy letter from Robert William Frederick Harrison to Messrs Dulau & Co | 14 November 1908 |
| NLB/34/651 | Copy letter from Archibald Geikie, to Sir Arthur William Rucker, Fellow of the Royal Society | 22 February 1907 |
| NLB/36/486 | Copy letter from Robert William Frederick Harrison, to Professor Joseph Larmor, Secretary, Royal Society | 4 November 1907 |
| NLB/37/223 | Copy letter from Robert William Frederick Harrison to Sir Arthur Rucker FRS | 17 February 1908 |
| NLB/39/484 | Copy letter from The Robert William Frederick Harrison to Harrison & Sons | 26 January 1909 |
| NLB/37/539 | Copy letter from Robert William Frederick Harrison to Messrs Robarts Lubbock & Co | 3 April 1908 |
| NLB/39/32 | Copy letter from Robert William Frederick Harrison to Sir Arthur [William] Rücker, Fellow of the Royal Society | 16 November 1908 |
| MC/24/137 | Letter from Arthur [William] Rücker, Everington, Nr Newbury, Berks, to [Robert] Harrison, [Royal Society] | 27 January 1909 |
| NLB/39/529 | Copy letter from Robert William Frederick Harrison to Harrison & Sons | 29 January 1909 |
| NLB/39/692 | Copy letter from Robert William Frederick Harrison to Air A [Arthur] Rucker, Fellow of the Royal Society | 24 February 1909 |
| NLB/39/689 | Copy letter from Robert William Frederick Harrison to Sir Arthur [William] Rucker, Fellow of the Royal Society | 24 February 1909 |
| NLB/42/62 | Copy letter from Robert William Frederick Harrison to Dr W [William] N [Napier] Shaw FRS | 18 March 1910 |
| NLB/41/810 | Copy letter from Joseph Larmor, to Sir Arthur Rucker, Fellow of the Royal Society | 28 February 1910 |
| NLB/44/419 | Copy letter from Robert William Frederick Harrison to Sir Arthur Rucker KCB, FRS | 10 July 1911 |
| NLB/45/139 | Copy letter from Robert William Frederick Harrison to Sir Arthur Rucker FRS | 4 January 1912 |
| NLB/45/614 | Copy letter from Joseph Larmor to Sir A [Arthur] Rucker | 12 April 1912 |
| NLB/52/284 | Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to Messrs Harrison & Sons | 2 November 1915 |
| NLB/21/104 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 28 July 1900 |
| NLB/52/271 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Charles Chree, FRS | 1 November 1915 |
| NLB/14/471 | Copy telegram from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | [16 March 1897] |
| RR/20/22 | Referee's report by Arthur William Rucker, on a paper 'Some phenomena of sunspots and of terrestrial magnetism - Part II' by Charles Chree | June 1913 |
| NLB/53/170 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Lafayette Ltd., 172 Fleet Street, E.C. | 16 May 1916 |
| NLB/23/1 | Copy letters sent from Royal Society administrative staff and officers | 2 August 1901-12 February 1902 |
| RR/9/182 | Referee's report by John William Strutt, Lord Rayleigh, on a paper 'The limiting thickness of liquid films' by Arnold William Reinold and Arthur William Rücker | 1883 |
| RR/11/80 | Referee's report by Arthur William Rucker on a paper 'An attempt to determine the adiabatic relations of ethyl oxide' by William Ramsay and E P Perman | 22 June 1891 |
| RR/10/394 | Letter from Arthur William Rucker, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'On the asymmetrical distribution of terrestrial magentism' by Henry Wilde | 17 February 1891 |
| RR/9/330 | Referee's report by Arthur William Rucker, on a paper 'On the practical measurements of temperature. Experiments made at the Cavendish Laboratory, Cambridge' by Hugh Longbourne Callendar | 1886 |
| RR/9/243 | Referee's report by Arthur William Rucker, on a paper 'The influence of stress and strain on the physical properties of matter. Part I. Moduli of elasticity—continued. Relations between moduli of elasticity, thermal capacity, and other physical constants' by Herbert Tomlinson | 1884 |
| RR/8/336 | Referee's report by John William Strutt, Lord Rayleigh, on a paper 'On the electrical resistance of thin liquid films, with a revision of Newton’s table of colours' by Arnold William Reinold and Arthur William Rucker | 27 April 1881 |
| RR/10/295 | Referee's report by Arthur William Rucker, on a paper 'The diurnal variation of terrestrial magnetism' by Arthur Schuster and Horace Lamb | [1889] |
| RR/10/197 | Referee's report by Arthur William Rucker, on a paper 'On the motion of terrestrial magentism' by Mr Naumann | 19 December 1888 |
| RR/11/282 | Referee's report by Arthur William Rucker, on a paper 'Floatation of solid bodies in liquid of less density than the solids' by Hennessy | 22 March 1893 |
| RR/10/289 | Referee's report by William Grylls Adams, on the Bakerian Lecture 'A magnetic survey of the British Isles for the epoch January 1, 1886' by Arthur William Rucker and Thomas Edward Thorpe | 6 July 1889 |
| RR/10/277 | Referee's report by Arthur William Rucker, on a paper 'On a possible geological origin of terrestrial magnetism' by Edward Hull | 9 May 1889 |
| RR/10/232 | Second referee's report by Arthur William Rucker, on a paper 'On the electromotive changes connected with the beat of the mammalian heart, and of the human heart in particular' by Augustus Desire Waller | [1888] |
| RR/12/213 | Referee's report by Ettrick William Creak, on a paper 'A magnetic survey of the British Isles for the epoch January 1, 1891' by Arthur William Rucker and Thomas Edward Thorpe | 22 December 1894 |
| RR/11/113 | Letter from Arthur William Rucker, on a paper 'On the electromotive phenomena of the mammalian heart' by William Maddock Bayliss and Ernest Henry Starling to the Secretary of the Royal Society | 18 January 1892 |
| RR/13/228 | Letter from Arthur William Rucker, on a paper 'A Maya calendar inscription, interpreted by Goodman's tables' by Alfred Percival Maudslay to Henrici | 25 June 1897 |
| RR/13/294 | Letter from Victor Herbert Veley, on his paper with Lilian J Veley 'Coleothrix methystes, a micro-organism in Rum' to Arthur William Rucker | 20 April 1898 |
| RR/12/212 | Referee's report by William Henry Mahoney Christie, on a paper 'A magnetic survey of the British Isles for the epoch January 1, 1891' by Arthur William Rucker and Thomas Edward Thorpe | 29 November 1894 |
| RR/12/411 | Referee's report by Arthur William Rucker, on a paper 'On the effect of pressure of the surrounding gas on the temperature of the crater of an electric arc light. Preliminary notes of observations made at Daramona, Street, co. Westmeath' by William Edward Wilson | 22 May 1895 |
| RR/11/237 | Referee's report by Arthur William Rucker, on a paper 'On the ratio of the specific heats of the paraffins and their monohalogen derivatives' by J W Capstick | 21 August 1893 |
| RR/14/122 | Letter from Joseph Norman Lockyer, to Arthur William Rucker, regarding a paper 'On the orientation of the pyramids and temples in the Sûdân' by E A Wallis Budge | 28 June 1899 |
| RR/12/298 | Referee's report by Arthur William Rucker, on a paper 'On the magnetical results of the voyage of H. M. S. "Penguin," 1890-93' by Ettrick William Creak | 28 May 1895 |
| RR/13/16 | Referee's report by Arthur William Rucker, on a paper 'Observations on atmospheric electricity at the Kew Observatory' by Charles Chree | 30 May 1896 |
| RR/13/36 | Referee's report by Arthur William Rucker, on a paper 'On the determination of freezing points' by John Allen Harker | 11 July 1896 |
| RR/13/99 | Second referee's report by Arthur William Rucker, on a paper 'An attempt to determine the adiabatic relations of ethyl oxide' by E P Perman, William Ramsay and J. Rose-Innes | 1896 |
| RR/13/62 | Letter from Joseph Norman Lockyer, on his paper 'Preliminary report on the results obtained with the prismatic camera during the eclipse of 1896' to Arthur William Rucker | 15 January 1896 |
| RR/14/129 | Referee's report by Arthur William Rucker, on a paper 'Collimator magnets and the determination of the Earth’s horizontal magnetic force' by Charles Chree | 4 July 1899 |
| RR/14/37 | Letter from Andrew Russell Forsyth, to Arthur William Rucker, regarding a paper 'Contributions to the theory of simultaneous partial differential equations' by Alfred Cardew Dixon | 24 January 1899 |
| RR/14/90bis | Letter from William Turner Thiselton-Dyer, to Arthur William Rucker, regarding a paper [attributed] 'Photographic investigation of the absorption spectra of chlorophyll and its derivatives in the violet and ultraviolet region of the spectrum' by C A Schunck | 23 March 1898 |
| RR/14/214 | Letter from Cargill Gilston Knott, to Arthur William Rucker, regarding a paper 'On the propagation of earthquake motion to great distances' by Richard Dixon Oldham | 27 July 1899 |
| RR/17/261 | Referee's report by Arthur William Rucker, on a paper 'Results of magnetic observations at stations on the coasts of the British Isles 1907' by L Chetwynd | 15 July 1908 |
| RR/13/279 | Letter from Sidney A Sworn, on his paper 'On the conditions which render absolute the readings of the mercurial thermometer absolute' to Arthur William Rucker | 25 July 1897 |
| RR/14/123 | Letter from John Evans, to Arthur William Rucker, regarding a paper 'On the orientation of the pyramids and temples in the Sûdân' by E A Wallis Budge | 12 July 1899 |
| RR/7/489 | Letter from George Carey Foster, on a paper 'On the expansion of sea-water by heat' by Thomas Edward Thorpe and Arthur William Rücker | 5 February 1876 |
| NLB/19/681 | Copy letter from Arthur William Rucker, to Louis Napoleon George Filon, [Fellow of the Royal Society] | 21 November 1899 |
| NLB/19/607 | Copy letter from Arthur William Rucker, to Professor William Carmichael McIntosh Fellow of the Royal Society | 8 November 1899 |
| IM/003920 | Rucker, Sir Arthur William | 1988 |
| NLB/17/366 | Copy letter from Arthur William Rucker, to General M A Rykatcheff, Academie Imperiale des Sciences, St Petersburg | 19 October 1898 |
| NLB/21/34 | Copy letter from Robert William Frederick Harrison, to Professor Jean Gaston Darboux, [Foreign Member, Royal Society], Academie des Sciences de l'Institute, Paris | 18 July 1900 |
| NLB/19/751 | Copy letter from Arthur William Rucker, Professor William Ramsay, [Fellow of the Royal Society] | 11 December 1899 |
| MM/10/1 | "Remarks on the Falmouth Magnetic Report", by Arthur W Rucker | mid-late 19th Century |
| IM/Maull/003919 | Rucker, Sir Arthur William | nd |
| NLB/21/385 | Copy letter from Arthur William Rucker, to the Secretary to Her Majesty's Treasury | 9 November 1900 |
| NLB/17/464 | Copy letter from Arthur William Rucker, to Sir Richard Strachey, Fellow of the Royal Society, Chairman of the Meteorological Council | 4 November 1898 |
| NLB/3/675 | Copy letter from Alfred H White, to Messrs West, Newman & Company | 29 August 1889 |
| NLB/5/42 | Copy letter from Herbert Rix, to Professor Arthur William Rücker, Fellow of the Royal Society | 25 February 1891 |
| NLB/10/182 | Copy letter from Herbert Rix, to the Editor, 'Colliery Guardian', 49 Essex Street, Strand, W.C. | 15 October 1894 |
| NLB/23/1/124 | Copy letter from Arthur William Rucker, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | 27 September 1901 |
| NLB/11/251 | Copy letter from Herbert Rix, to Professor Arthur William Rucker, Fellow of the Royal Society | 20 May 1895 |
| NLB/11/494 | Copy letter from Herbert Rix, to Professor Michael Foster | 12 July 1895 |
| NLB/14/807 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 21 May 1897 |
| NLB/9/767 | Copy letter from Herbert Rix, to Professor Michael Foster, [Royal Society] | 11 July 1894 |
| NLB/9/877 | Copy letter from Herbert Rix, to W Graham Greene, Admiralty, Whitstable | 24 July 1894 |
| NLB/13/590 | Copy letter from Robert William Frederick Harrison, to Lord Rayleigh [John William Strutt], Secretary, Royal Society | 13 October 1896 |
| NLB/14/72 | Copy letter from Robert William Frederick Harrison, to Professor George Howard Darwin, Fellow of the Royal Society | 22 December 1896 |
| NLB/14/15 | Copy letter from Arthur William Rucker, to Dr Thomas Edward Thorpe, Fellow of the Royal Society | 11 December 1896 |
| NLB/14/271 | Copy letter from Arthur William Rucker, to Dr John George Bourinot, Honorary Secretary, Royal Society of Canada, Ottawa | 6 February 1897 |
| NLB/14/261 | Copy letter from Arthur William Rucker, to Professor Arthur Mason Worthington, Fellow of the Royal Society | [26 January 1897] |
| NLB/14/430 | Copy letter from Arthur William Rucker, to Professor [James] Dewar, [Fellow of the Royal Society] | 10 March 1897 |
| NLB/14/401 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 5 March 1897 |
| NLB/14/636 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 12 April 1897 |
| NLB/14/832 | Copy letter from Arthur William Rucker, to Dr J G Bourinot, Honorary Secretary, Royal Society of Canada, Ottawa | 25 May 1897 |
| NLB/14/788 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary of the Royal Society | 17 May 1897 |
| NLB/14/805 | Copy letter from the Secretary of the Royal Society, to the Under Secretary of State for Foreign Affairs, The Foreign Office, S.W. | 22 May 1897 |
| NLB/14/877 | Copy letter from Arthur William Rucker, to Professor Osborne Reynolds, Fellow of the Royal Society | 31 May 1897 |
| NLB/15/181 | Copy letter Arthur William Rucker, to the Institut International de Bibliographie (Conference Bibliographique), Place Du Mussee, 1, Brussels | 9 July 1897 |
| NLB/15/235 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 21 July 1897 |
| NLB/15/136 | Copy letter from Arthur William Rucker, to Arthur Schuster, [Fellow of the Royal Society] | 5 July 1897 |
| NLB/15/227 | Copy letter from Arthur William Rucker, to A P Maudslay | 19 July 1897 |
| NLB/15/248 | Copy letter from Arthur William Rucker, to by Richard Tetley Glazebrook, Fellow of the Royal Society | 23 July 1897 |
| NLB/16/5 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 11 January 1898 |
| NLB/16/73 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 26 January 1898 |
| NLB/15/567 | Copy letter from Arthur William Rucker, to the Secretary of the Australian Museum, Sydney | 29 October 1897 |
| NLB/15/583 | Copy letter from Arthur William Rucker, to Arthur Schuster, [Fellow of the Royal Society] | 1 November 1897 |
| NLB/16/79 | Copy letter from Arthur William Rucker, to [R T] Glazebrook, [Fellow of the Royal Society] | 26 January 1898 |
| NLB/16/461 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 6 April 1898 |
| NLB/15/272 | Copy letter from Michael Foster and Arthur William Rucker, to William Turner Thiselton-Dyer, Professor Edward Albert Sharpey-Schafer, Professor George Howard Darwin, Richard Tetley Glazebrook, Professor Edwin Ray Lankester, Sir Archibald Geikie, Fellows of the Royal Society | 24 July 1897 |
| NLB/15/534 | Copy letter from Robert William Frederick Harrison, to Professor Thomas George Bonney, Fellow of the Royal Society | 22 October 1897 |
| NLB/15/106 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, [Fellow of the Royal Society] | 28 June 1897 |
| NLB/16/68 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 24 January 1898 |
| NLB/16/331 | Copy letter from Arthur William Rucker, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 18 March 1898 |
| NLB/15/588 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 1 November 1897 |
| NLB/16/351 | Copy letter from Arthur William Rucker, to the Secretary to the Board of Trade, Whitehall Gardens, S.W. | 21 March 1898 |
| NLB/15/624 | Copy letter from Robert William Frederick Harrison, to Professor Andrew Russell Forsyth, Fellow of the Royal Society | 5 November 1897 |
| NLB/15/615 | Copy letter from Arthur William Rucker, to Professor William Ramsay, [Fellow of the Royal Society] | 4 November 1897 |
| NLB/15/519 | Copy letter from Robert William Frederick Harrison, to Professor Henry Edward Armstrong, Fellow of the Royal Society | 21 October 1897 |
| NLB/15/560 | Copy letter from Arthur Wiliam Rucker, to Mr Osbert Salvin, [Fellow of the Royal Society] | 28 October 1897 |
| NLB/15/556 | Copy letter from Robert William Frederick Harrison, to Professor Andrew Russell Forsyth, Fellow of the Royal Society | 28 October 1897 |
| NLB/15/246 | Copy letter from Arthur William Rucker, to Sir William Huggins, [Fellow of the Royal Society] | 22 July 1897 |
| NLB/16/120 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker | 5 February 1898 |
| NLB/15/622 | Copy letter from Arthur William Rucker, to John Burke, Owens College, Manchester | 5 November 1897 |
| NLB/15/604 | Copy letter from Arthur William Rucker, to Dr Ernest William Hobson, Fellow of the Royal Society | 3 November 1897 |
| NLB/15/720 | Copy letter from Arthur William Rucker, to the Under Secretary of State for India, Whitehall, S.W. | 22 November 1897 |
| NLB/16/361 | Copy letter from Arthur William Rucker, to Lockyer | 22 March 1898 |
| NLB/15/702 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Fellow of the Royal Society | 19 November 1897 |
| NLB/15/723 | Copy letter from Arthur William Rucker, to Major General Sir J F D Donnelly, Science and Art Department, South Kensington, S.W. | 23 November 1897 |
| NLB/15/729 | Copy letter from Arthur William Rucker, to Sir Charles Edward Bernard | 26 November 1897 |
| NLB/15/340 | Copy letter from Robert William Frederick Harrison, to Frank McClean, Fellow of the Royal Society | 13 August 1897 |
| NLB/16/424 | Copy of Minute [from Robert William Frederick Harrison], [to R T Glazebrook] | [2 April 1898] |
| NLB/15/787 | Copy letters sent from Michael Foster and Arthur William Rucker, to the Swiss Minister, 52 Lexham Gardens, W. | 9 December 1897 |
| NLB/15/852 | Copy letter from Arthur William Rucker, to the Secretary, Her Majesty's Treasury, Whitehall, S.W. | 24 December 1897 |
| NLB/15/897 | Copy letter from Arthur William Rucker, to the Secretary to Her Majesty's Treasury, Whitehall, S.W. | 11 January 1898 |
| NLB/17/33 | Copy letter from Arthur William Rucker, to the Under Secretary of State for Foreign Affairs, Foreign Office, Downing Street, S.W. | 5 July 1898 |
| NLB/16/699 | Copy letter from Robert William Frederick Harrison, to Michael Foster | 21 May 1898 |
| NLB/16/708 | Copy letter from Arthur William Rucker, to Professor W Ramsay, Fellow of the Royal Society | 24 May 1898 |
| NLB/17/110 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 19 July 1898 |
| NLB/16/736 | Copy letter from Arthur William Rucker, to the Secretaries, Royal Astronomical Society, Burlington House, W. | 27 May 1898 |
| NLB/18/511 | Copy letter from Michael Foster and Arthur William Rucker, to the President of the Society of Chemical Industry | 24 March 1899 |
| NLB/17/158 | Copy letter from Arthur William Rucker, to Professor Oliver Lodge, Fellow of the Royal Society | 28 July 1898 |
| NLB/17/254 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 22 September 1898 |
| NLB/17/265 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 26 September 1898 |
| NLB/17/349 | Copy letter from Arthur William Rucker, to Alfred Bray Kempe, Fellow of the Royal Society | 15 October 1898 |
| NLB/17/716 | Copy letter from Arthur William Rucker, to Professor Addison | 9 December 1898 |
| NLB/17/485 | Copy letter from Arthur William Rucker, to the members of the National Physical Laboratory Committee as nominated | 4 November 1898 |
| NLB/17/478 | Copy letter from Arthur William Rucker, to George Howard Darwin, [Fellow of the Royal Society] | 8 November 1898 |
| NLB/17/556 | Copy letter from Arthur William Rucker and Michael Foster, to the Secretary of the Imperial Academy of Sciences, St Petersburg | 18 November 1898 |
| NLB/16/802 | Copy letter from Arthur William Rucker, to the Secretary, Office of Works and Public Buildings, Storey's Gate, S.W. | 13 June 1898 |
| NLB/17/734 | Copy letter from Arthur William Rucker, to Francis Galton, Fellow of the Royal Society, Chairman of the Kew Observatory Committee | 12 December 1898 |
| NLB/17/720 | Copy letter from Arthur William Rucker, to S E Spring-Rice | 12 December 1898 |
| NLB/17/130 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 22 July 1898 |
| NLB/18/150 | Copy letter from Arthur William Rucker, to Professor Poincare | 24 January 1899 |
| NLB/18/163 | Copy letter from Robert William Frederick Harrison, to Professor [A R] Forsyth | 27 January 1899 |
| NLB/18/172 | Copy letter from Arthur William Rucker, to [Professor F] Klein | 29 January 1899 |
| NLB/18/189 | Copy letter from Michael Foster and Arthur William Rucker, to President de l'Academie des Sciences de l'Institut, Paris | 2 February 1899 |
| NLB/18/190 | Copy letter from Michael Foster and Arthur William Rucker, to Presidente, Reale Accademia del Lincei, Rome | 2 February 1899 |
| NLB/19/178 | Copy letter from Arthur William Rucker, to Sir Jospeh Larmor, Fellow of the Royal Society | 7 July 1899 |
| NLB/18/235 | Copy letter from Arthur William Rucker, to the Secretary, H.M. Office of Works, Storey's Gate, Westminster, S.W. | 9 February 1899 |
| NLB/18/346 | Copy letter from Robert William Frederick Harrison, to Dr J Scott Keltie, Secretary, Royal Geographical Society | 27 February 1899 |
| NLB/19/251 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 19 July 1899 |
| NLB/19/340 | Copy letter from Arthur William Rucker, to the Secretary to Her Majesty's Treasury | 12 August 1899 |
| NLB/18/409 | Copy letter from Robert William Frederick Harrison, to Lord Lister, President of the Royal Society | 7 March 1899 |
| NLB/18/433 | Copy letter from Michael Foster and Arthur William Rucker, to the Vice-Chancellor of the University of Cambridge | 7 March 1899 |
| NLB/18/361 | Copy letter from Arthur William Rucker, to Wilson Fox, The Observatory, Falmouth | 28 February 1899 |
| NLB/18/257 | Copy letter from Robert William Frederick Harrison, to Professor [Arthur William] Rucker, [Fellow of the Royal Society] | 13 February 1899 |
| NLB/18/217 | Copy letter from Arthur William Rucker, to Professor [D J] Korteweg | 7 February 1899 |
| NLB/18/676 | Copy letter from Michael Foster and Arthur William Rucker, to Professor [E] Klein | 18 April 1899 |
| NLB/19/548 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 28 October 1899 |
| NLB/19/772 | Copy letter from Arthur William Rucker, to Professor Dr Waldeyer, Secretary, Königlich Preussische Akademie der Wissenschaften , Berlin | 14 December 1899 |
| NLB/19/757 | Copy letter from Arthur William Rucker, to the Secretaries of the Joint Permanent Eclipse Committee, Royal Astronomical Society, Burlington House, W. | 12 December 1899 |
| NLB/19/869 | Copy letter from Arthur William Rucker, to J C Fergusson | 10 January 1900 |
| NLB/19/831 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 3 January 1900 |
| NLB/19/873 | Copy letter from Robert William Frederick Harrison, to Professor Andrew Russell Forsyth, Fellow of the Royal Society | 10 January 1900 |
| NLB/19/821 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society, Basset Down House, Swindon | 3 January 1900 |
| NLB/20/115 | Copy letter from Arthur William Rucker, to Professor Amwers | 5 February 1900 |
| NLB/18/799 | Copy letter from Robert William Frederick Harrison, to the Lord Chamberlain | 16 May 1899 |
| NLB/20/113 | Copy letter from Robert William Frederick Harrison, to Sir Michael Foster, Secretary, Royal Society | 5 February 1900 |
| NLB/20/246 | Copy letter from Robert William Frederick Harrison, to Professor Alfred Cardew Dixon, [Fellow of the Royal Society], Queen's College, Galway | 6 March 1900 |
| NLB/20/337 | Copy letter from Arthur William Rucker, to Sir Joseph Norman Lockyer, Fellow of the Royal Society | 26 March 1900 |
| NLB/19/719 | Copy letter from Arthur William Rucker, to Sir Richard Strachey, Fellow of the Royal Society | 2 December 1899 |
| NLB/20/278 | Copy letter from Arthur William Rucker, to William Abbott Herdman, [Fellow of the Royal Society] | 12 March 1900 |
| NLB/20/314 | Copy letter from Robert William Frederick Harrison, to Professor Karl Pearson, Fellow of the Royal Society | 20 March 1900 |
| NLB/20/372 | Copy letter from Robert William Frederick Harrison, to Miss Maria Dawson, Botanical Laboratory, Cambridge | 5 April 1900 |
| NLB/20/334 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 26 March 1900 |
| NLB/20/511 | Copy letter from Michael Foster, to the Under Secretary of State for Foreign Affairs, The Foreign Office, S.W. | 11 May 1900 |
| NLB/20/628 | Copy letter from Arthur William Rucker, to Ernest William Barnes, [Fellow of the Royal Society], Trinity College, Cambridge | 1 June 1900 |
| NLB/20/705 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 20 June 1900 |
| NLB/20/747 | Copy letter from Arthur William Rucker, the Secretary of Admiralty, Whitehall, S.W. | 26 June 1900 |
| NLB/21/32 | Copy letter from Robert William Frederick Harrison, to William Henry Mahoney Christie, [Fellow of the Royal Society] | 18 July 1900 |
| NLB/21/46 | Copy letter from Robert William Frederick Harrison, to Professor Andrew Russell Forsyth, Fellow of the Royal Society | 20 June 1900 |
| NLB/23/2/91 | Copy letter from Arthur William Rucker, to Professor [Jagadis Chunder] Bose, Fellow of the Royal Society | 25 June 1901 |
| NLB/21/287 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 20 October 1900 |
| NLB/21/401 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 13 November 1900 |
| NLB/22/357 | Copy letter from Arthur [William] Rucker, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 30 April 1901 |
| NLB/22/344 | Copy letter from Arthur [William] Rucker, to [Robert Bellamy] Clifton, [Fellow of the Royal Society] | [April 1901] |
| NLB/21/615 | Copy letter from Arthur William Rucker, to William Napier Shaw, Fellow of the Royal Society, Secretary of the Meteorological Council | 18 December 1900 |
| NLB/22/668 | Copy letter from Arthur [WIlliam] Rucker, to Sir William Huggins, President of the Royal Society | 24 June 1901 |
| NLB/22/672 | Copy letter from Arthur [William] Rucker, to [Professor Robert Bellamy] Clifton, [Fellow of the Royal Society] | 24 June 1901 |
| NLB/22/826 | Copy letter from Robert William Frederick Harrison, to Arthur William Rucker, [Fellow of the Royal Society] | 26 July 1901 |
| NLB/22/673 | Copy letter from Arthur [William] Rucker, to Sir David Gill, Fellow of the Royal Society [incomplete] | 24 June 1901 |
| NLB/23/1/391 | Copy letter from Professor Arthur William Rucker, to Professor James Alfred Ewing, Fellow of the Royal Society | 6 November 1901 |
| NLB/23/1/555 | Copy letter from Arthur William Rucker, to Augustus George Vernon Harcourt, Fellow of the Royal Society | 2 December 1901 |
| NLB/28/32 | Copy letter from Robert William Frederick Harrison, to Messrs Few & Company | 22 December 1903 |
| NLB/28/10 | Copy letter from Robert William Frederick Harrison, to Sir Arthur Rucker, Fellow of the Royal Society, Principal of the University of London | 18 December 1903 |
| NLB/28/55 | Copy letter from [Robert William Frederick Harrison], to Sir Michael Foster, Fellow of the Royal Society | 24 December 1903 |
| NLB/34/617 | Copy letter from Joseph Larmor, to Arthur William Rucker, Fellow of the Royal Society | 14 February 1907 |
| NLB/37/698 | Copy letter from Robert William Frederick Harrison to Sir Arthur Rucker, Fellow of the Royal Society | 2 May 1908 |
| RR/9/392 | Referee's report by Arthur Schuster, on a paper 'On the relation between the thickness and the surface tension of liquid films' by Arnold William Reinold and Arthur William Rucker | 1886 |
| RR/9/393 | Referee's report by Robert Bellamy Clifton, on a paper 'On the relation between the thickness and the surface tension of liquid films' by Arnold William Reinold and Arthur William Rucker | 16 September 1886 |
| RR/12/300 | Second referee's report by Arthur William Rucker, on a paper 'On the magnetical results of the voyage of H. M. S. "Penguin," 1890-93' by Ettrick William Creak | 10 December 1895 |
| RR/12/391 | Referee's report by Arthur William Rucker, on a paper 'A determination of the specific heat of water in terms of the international electric units' by Arthur Schuster and William Gannon | 16 January 1895 |
| RR/11/112 | Referee's report by Arthur William Rucker, on a paper 'On the electromotive phenomena of the mammalian heart' by William Maddock Bayliss and Ernest Henry Starling | 14 January 1892 |
| NLB/3/1044 | Copy letter from Herbert Rix, to [John William Strutt] Lord Rayleigh, [Royal Society] | 21 December 1889 |
| NLB/5/8 | Copy letter from Herbert Rix, to Professor Arthur William Rücker, Fellow of the Royal Society | 16 February 1891 |
| NLB/8/1028 | Copy letter from Herbert Rix, to Dr Henry Woodward, Fellow of the Royal Society | 12 February 1894 |
| NLB/10/702 | Copy letter from Herbert Rix, to Professor Michael Foster | 22 January 1895 |
| NLB/12/897 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 23 May 1896 |
| NLB/14/248 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 2 February 1897 |
| NLB/14/791 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 18 May 1897 |
| NLB/15/744 | Copy letter from Arthur William Rucker, to the Under Secretary of State for India, India Officem Whitehall, S.W. | 1 December 1897 |
| NLB/15/781 | Copy letters sent from Robert William Frederick Harrison, to Michael Foster [Secretary, Royal Society] | 7 December 1897 |
| NLB/17/87 | Copy letter from Robert William Frederick Harrison, to Professor Horace Lamb, Fellow of the Royal Society | 13 July 1898 |
| NLB/17/116 | Copy letter from the Secretary of the Royal Society, to the Under Secretary of State for India, India Office, Whitehall, S.W. | 19 July 1898 |
| NLB/17/413 | Copy letter from Artur William Rucker, to Karl Pearson, [Fellow of the Royal Society] | 25 October 1898 |
| NLB/17/386 | Copy letter from Arthur William Rucker, to Professor Dmitri Ivanovich Mendeleeff, Foreign Member, Royal Society, 19 Zabalkansky, St Petersburg | 20 October 1898 |
| NLB/17/451 | Copy letter from Michael Foster and Arthur William Rucker, to Sir Thomas Henry Sanderson, Under Secretary of State for Foreign Affairs, Foreign Office, S.W. | 3 November 1898 |
| NLB/17/554 | Copy letter from Arthur William Rucker, to Major General Rykatcheff | 18 November 1898 |
| NLB/17/555 | Copy letter from [Arthur William Rucker and Michael Foster], to the Secretary of the Imperial Academy of Sciences, St Petersburg | 18 November 1898 |
| NLB/16/566 | Copy letter from Arthur William Rucker and Michael Foster, to Captain E H Hills, Secretary, Joint Permanent Eclipse Committee, Royal Astronomical Society, Burlington House, W. | 29 April 1898 |
| NLB/17/608 | Copy letter from Arthur William Rucker, to the Secretary, Her Majesty's Office of Works and Public Buildings, Storey's Gate, Westminster, S.W. | 24 November 1898 |
| NLB/17/616 | Copy letter Arthur William Rucker, to the Secretary, Her Majesty's Office of Works and Public Buildings, Storey's Gate, Westminster, S.W. | 25 November 1898 |
| NLB/17/644 | Copy letter from Arthur William Rucker, to the General Secretary of the British Association | 29 November 1898 |
| NLB/18/72 | Copy letter from Arthur William Rucker, to Professor G Carey Foster, Fellow of the Royal Society | 9 January 1899 |
| NLB/17/639 | Copy letter from Arthur William Rucker and Michael Foster, to the Secretary, Her Majesty's Treasury | 28 November 1898 |
| NLB/17/721 | Copy letter from Arthur William Rucker, to Sir Douglas Strutt Galton, Fellow of the Royal Society | 12 December 1898 |
| NLB/17/762 | Copy letter from Robert William Frederick Harrison, to the Secretary, Her Majesty's Treasury, Whitehall, S.W. | 16 December 1898 |
| NLB/17/763 | Copy letter from Arthur William Rucker, to General-Major M A Rykatcheff, Observatoire Physique Central, St Petersburg | 16 December 1898 |
| NLB/18/212 | Copy letter from Arthur William Rucker, to [Professor H H] Turner | 7 February 1899 |
| NLB/19/174 | Copy letter from Arthur William Rucker, to Ernest Alfred Thompson Wallis Budge, The British Museum, Bloomsbury, W.C. | 7 July 1899 |
| NLB/19/212 | Copy letter from Robert William Frederick Harrison, to Michael Foster, [Secretary, Royal Society] | 13 July 1899 |
| NLB/19/364 | Copy letter from Arthur William Rucker, to the Principal Assistant Secretary, the Department of Science and Art, South Kensington, S.W. | 28 August 1899 |
| NLB/19/360 | Copy letter, clause and list of bills from Arthur William Rucker, to the Secretary, Her Majesty's Office of Works and Public Buildings, S.W. | 23 August 1899 |
| NLB/19/449 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 5 October 1899 |
| NLB/19/455 | Copy letter from Robert William Frederick Harrison, to Professor William Edward Ayrton, Fellow of the Royal Society | 7 October 1899 |
| NLB/18/362 | Copy letter from Arthur William Rucker, to the Secretary, H.M. Office of Works, Storey's Gate, Westminster, S.W. | 28 February 1899 |
| NLB/18/395 | Copy letter from Michael Foster and Arthur William Rucker, to M v Pettenkofer | 6 March 1899 |
| NLB/19/761 | Copy letter from Arthur William Rucker, to Sir Clements Roberts Markham, Fellow of the Royal Society | 12 December 1899 |
| NLB/19/783 | Copy letter from Arthur William Rucker, to Captain Edmond Herbert Grove-Hills, [Fellow of the Royal Society] | 18 December 1899 |
| NLB/19/711 | Copy letter from Michael Foster and Arthur William Rucker, to multiple recipients | 21 November 1899 |
| NLB/20/71 | Copy letter from Michael Foster and Arthur William Rucker, to Sir William de Wiveleslie Abney, Fellow of the Royal Society, Chairman of the Government Grant Board B | 24 January 1900 |
| NLB/20/93 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow for the Royal Society | 30 January 1900 |
| NLB/20/66 | Copy letter from Arthur William Rucker and Michael Foster, to Captain Edmond Herbert Grove-Hills, Secretary to the Joint Permanent Eclipse Committee, Burlington House, W. | 24 January 1900 |
| NLB/18/838 | Copy letter from Arthur William Rucker, to Principal R T Glazebrook, Fellow of the Royal Society, 4 Sunnyside, Prince's Park, Liverpool | 29 May 1899 |
| NLB/18/842 | Copy letter from Michael Foster and Arthur William Rucker, to the President of the National Academy of Sciences, Washington, U.S.A. | 31 May 1899 |
| NLB/20/65 | Copy letter from Michael Foster and Arthur William Rucker, to Sir Joseph Norman Lockyer, [Fellow of the Royal Society] | 24 January 1900 |
| NLB/20/29 | Copy letter from Arthur William Rucker, to the Principal Secretary of State for India, the Royal College of Science, South Kensington, S.W. | 17 January 1900 |
| NLB/20/470 | Copy letter from Robert William Frederick Harrison, to William Abbott Herdman, Fellow of the Royal Society | 30 April 1900 |
| NLB/20/499 | Copy letter from Arthur William Rucker, to Joseph Lister, President of the Royal Society | 7 May 1900 |
| NLB/20/399 | Copy letter from Arthur William Rucker, to the Secretary of State for Foreign Affairs, Foreign Office, S.W. | 6 April 1900 |
| NLB/20/464 | Copy letter from Arthur William Rucker and Michael Foster, to the Secretaries, Königlich Preussische Akademie der Wissenschaften, Universitatsstrase, 8, Berlin, NW7 | 28 April 1900 |
| NLB/20/498 | Copy letter from Arthur William Rucker, to Sir Clements Robert Markham, Fellow of the Royal Society | 7 May 1900 |
| NLB/20/734 | Copy letter from Robert William Frederick Harrison, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 27 June 1900 |
| NLB/21/312 | Copy letter from Arthur William Rucker, to S E Spring-Rice, Her Majesty's Treasury, Whitehall, S.W. | 26 October 1900 |
| NLB/39/264 | Copy letter from Robert William Frederick Harrison to Dr R [Richard] T [Tetley] Glazebrook, Fellow of the Royal Society | 18 December 1908 |
| NLB/22 | New Letter Book volume 22, copy letters sent from Royal Society administration | 8 February 1901-2 August 1901 |
| RR/12/302 | Letter from Arthur William Rucker, to Herbert Rix, regarding a paper 'On the magnetical results of the voyage of H. M. S. "Penguin," 1890-93' by Ettrick William Creak | 20 December 1895 |
| RR/11/200 | Referee's report by Arthur William Rucker, on a paper 'On some of the properties of water and of steam' by William Ramsay and Sydney Young | 14 January 1892 |
| NLB/16/415 | Copy letter from Michael Foster and Arthur William Rucker, to the Marquess of Salisbury, the Foreign Office, S.W. | 5 April 1898 |
| RR/12/215 | Letter from Arthur William Rucker and Thomas Edward Thorpe, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'A magnetic survey of the British Isles for the epoch January 1, 1891' by Arthur William Rucker and Thomas Edward Thorpe | 28 January 1895 |
| NLB/23/2/62 | Copy letter from Arthur William Rucker, to W Williams, Municipal Technical School, Swansea | 3 May 1901 |
| NLB/17/100 | Copy letter from Arthur William Rucker and copy report of the Meteorological Office Superannuation Committee, to Lieutenant General Sir Richard Strachey, Fellow of the Royal Society | 15 July 1898 |
| NLB/20/162 | Copy letter from Michael Foster and Arthur William Rucker, to Sir Richard Strachey, Fellow of the Royal Society, Chairman of the Meteorological Council | 19 February 1900 |
| NLB/19/746 | Copy letter from Arthur William Rucker, to the Secretary to Her Majesty's Treasury | 11 December 1899 |
| RR/10/390 | Referee's report by Arthur William Rucker, on a paper 'On the causes of terrestrial magnetism' by Henry Wilde | 26 July 1890 |
| RR/14/49 | Letter from Clinton Coleridge Farr, to Arthur William Rucker, regarding a paper 'On some expressions for the radial and axial components of the magnetic force in the interior of solenoids of circular cross-section' by Clinton Coleridge Farr | 1 September 1898 |
| RR/14/35 | Letter from Arthur William Rucker, to Andrew Russell Forsyth, regarding a paper 'Contributions to the theory of simultaneous partial differential equations' by Alfred Cardew Dixon | 10 January 1899 |
| RR/14/90 | Letter from Arthur William Rucker, to William Turner Thiselton-Dyer, regarding a paper [attributed] 'Photographic investigation of the absorption spectra of chlorophyll and its derivatives in the violet and ultraviolet region of the spectrum' by C A Schunck | 22 March 1898 |
| RR/15/83 | Letter from Joseph Norman Lockyer, on his paper with Captain Chisolm-Batten and Alexander Pedler 'Total eclipse of the sun, January 22, 1898, observations at Visiadrug' to Arthur William Rucker | 26 March 1900 |
| AP/67/3 | Paper, 'On the chief line of the spectrum of the nebulae [in Orion]' by J N [Joseph Norman] Lockyer | 1890 |
| MC/13 | Volume 13 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1884 |
| RR/9/391 | Letter from Arthur Schuster, on a paper 'On the relation between the thickness and the surface tension of liquid films' by Arnold William Reinold and Arthur William Rucker to the Secretary of the Royal Society | 24 July 1886 |
| AP/70/5 | Paper, 'Electrical interference phenomena somewhat analogous to Newton's Rings, but exhibited by waves along wires' by Edwin Henry Barton | 1894 |
| NLB/14/701 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 29 April 1897 |
| NLB/23/2/113 | Copy letter from Arthur William Rucker, to Jagadis Chunder Bose, [Fellow of the Royal Society], 21a High Street, Wiimbledon, S.W. | 27 July 1901 |
| RR/14/219 | Letter from Karl Pearson, to Arthur William Rucker, regarding a paper 'On the vibrations in the field round a theoretical hertzian oscillator' by Karl Pearson and Alice Lee | 11 March 1899 |
| NLB/21/249 | Copy letter from Arthur William Rucker, to Dr Emanuel Lasker | 10 October 1900 |
| RR/15/82 | Copy letter from Arthur William Rucker, on a paper 'Total eclipse of the sun, January 22, 1898, observations at Visiadrug' by Joseph Norman Lockyer, Captain Chisholm-Batten and Alexander Pedler to Joseph Norman Lockyer | 23 March 1900 |
| AP/75/5 | Unpublished paper, 'On the application of the kinetic theory of gases to the electric, magnetic, and optical properties of diatomic gases' by George W [Walker] Walker | 1901 |
| AP/74/11 | Paper, 'A trichromic case of colour blindness' by F W [Frederick William] Edridge-Green | 1900 |
| AP/80/5 | Unpublished paper, 'On black soap-films' by A W [Arnold William] Reinold and A W [Arthur William] Rücker | 1890 |
| PP/10/24 | Paper, 'Preliminary note on the "radio-micrometer" a new instrument for measuring the most feeble radiation' by C V [Charles Vernon] Boys | 1887 |
| PP/16/26 | Paper, 'Preliminary note on a new magnetometer' by W Stroud | 1890 |
| PP/16/26/1 | Manuscript, 'Preliminary note on a new magnetometer' by W Stroud | 1890 |
| PP/15/29 | Uncorrected proof, 'Preliminary note on supplementary magnetic surveys of special districts in the British Isles' by A W [Arthur William] Rucker and T E [Thomas Edward] Thorpe | 1890 |
| MS/421/3 | Register of Papers submitted to the Royal Society, 1885-1905 | 1885-1905 |
| PP/16/36 | Paper, 'On the relation between the magnetic permeability of rocks and regional magnetic disturbances' by A W [Arthur William] Rucker | 1890 |
| PP/16/36/1 | Manuscript, 'On the relation between the magnetic permeability of rocks and regional magnetic disturbances' by A W [Arthur William] Rucker | 1890 |
| PP/16/36/2 | Diagrams, experimental equipment and measurements by A W [Arthur William] Rucker | 1890 |
| PP/4/2 | Paper, 'Note on the irregularities in magnetic inclination on the west coast of Scotland' by Thomas Edward Thorpe and Arthur William Rucker | 1883 |
| RR/14/124 | Letter from George Howard Darwin, to Arthur William Rucker, regarding a paper 'On the orientation of the pyramids and temples in the Sûdân' by E A Wallis Budge | 29 July 1899 |
| RR/15/160 | Referee's report and letter from George James Burch, on a paper 'The electric response of inorganic substances. Preliminary notice' by Jagadis Chunder Bose to Arthur William Rucker | June 1901 |
| RR/7/490 | Referee's report by George Carey Foster, on a paper 'On the expansion of sea-water by heat' by Thomas Edward Thorpe and Arthur William Rücker | 1876 |
| RR/7/491 | Referee's report by William Hallowes Miller, on a paper 'On the expansion of sea-water by heat' by Thomas Edward Thorpe and Arthur William Rücker | 1876 |
| RR/7/492 | Letter from George Carey Foster, on a paper 'On the expansion of sea-water by heat' by Thomas Edward Thorpe and Arthur William Rücker | 19 April 1876 |
| RR/9/317 | Joint referee's report by Osborne Reynolds and Arthur William Rucker, on a paper 'The influence of stress and strain on the physical properties of matter' by Herbert Tomlinson | 13 February 1885 |
| RR/10/229 | Referee's report by Arthur William Rucker, on a paper 'On the electromotive changes connected with the beat of the mammalian heart, and of the human heart in particular' by Augustus Desire Waller | 7 August 1888 |
| RR/10/230 | Letter from Arthur William Rucker, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'On the electromotive changes connected with the beat of the mammalian heart, and of the human heart in particular' by Augustus Desire Waller | 8 August 1888 |
| RR/10/276 | Referee's report by Arthur William Rucker, on a paper 'Magnetic and other physical properties of iron at a high temperature' by John Hopkinson | 19 June 1889 |
| RR/10/290 | Referee's report by Stephen Joseph Perry, on the Bakerian Lecture 'A magnetic survey of the British Isles for the epoch January 1, 1886' by Arthur William Rucker and Thomas Edward Thorpe | [1889] |
| RR/10/392 | Referee's report by Arthur William Rucker, on a paper 'On the asymmetrical distribution of terrestrial magentism' by Henry Wilde | 29 January 1890 |
| RR/11/46 | Referee's report by Arthur William Rucker, on the Croonian Lecture 'On the mammalian nervous system, its functions, and their localisation determined by an electrical method' by Francis Gotch and Victor Alexander Haden Horsley | 1891 |
| RR/11/111 | Letter from Arthur William Rucker, on a paper 'On the electromotive phenomena of the mammalian heart' by William Maddock Bayliss and Ernest Henry Starling to the Secretary of the Royal Society | 14 January 1892 |
| RR/11/114 | Letter from Arthur William Rucker, on a paper 'On the electromotive phenomena of the mammalian heart' by William Maddock Bayliss and Ernest Henry Starling to the Secretary of the Royal Society | 20 January 1892 |
| RR/11/145 | Referee's report by Arthur William Rucker, on a paper 'On the simultaneity of magnetic variations at different places on occasions of magnetic disturbance, and on the relation between magnetic and earth current phenomena' by William Ellis | 1 July 1892 |
| RR/12/27 | Referee's report by John Henry Poynting, on a paper 'On the thickness and electrical resistance of thin liquid films' by Arnold William Reinold and Arthur William Rucker | 16 April 1893 |
| RR/12/28 | Referee's report by John William Strutt, 3rd Baron Rayleigh, on a paper 'On the thickness and electrical resistance of thin liquid films' by Arnold William Reinold and Arthur William Rucker | [1893] |
| RR/12/214 | Detailed referee's report by Ettrick William Creak, on a paper 'A magnetic survey of the British Isles for the epoch January 1, 1891' by Arthur William Rucker and Thomas Edward Thorpe | 22 December 1894 |
| RR/13/97 | Referee's report by Arthur William Rucker, on a paper 'An attempt to determine the adiabatic relations of ethyl oxide' by E P Perman, William Ramsay and J. Rose-Innes | 1897 |
| RR/14/38 | Letter from Micaiah John Muller Hill, to Arthur William Rucker, regarding a paper 'Contributions to the theory of simultaneous partial differential equations' by Alfred Cardew Dixon | 25 January 1899 |
| RR/14/103 | Letter from H M Vernon, to Arthur William Rucker, regarding a paper 'The relations between the hybrid and parent forms of echinoid larvae' by H M Vernon | 27 June 1898 |
| RR/14/261 | Letter from Alfred Edwin Howard Tutton, to Arthur William Rucker, regarding a paper 'The thermal deformation of the crystallised normal sulphates of Potassium, Rubidium, and Caesium' by Alfred Edwin Howard Tutton | 4 April 1899 |
| RR/15/113 | Referee's report by Arthur William Rucker, on a paper 'Certain new methods of investigating the nature & effects of musical sounds' by Walter H Thelwall | January 1900 |
| RR/15/123 | Letter from Alfred Edward Howard Tutton, on his paper 'A comparative crystallographical study of the double selenates of the series R2M(SeO4)2,6H20. Part 1- Salts in which M is zinc' to Arthur William Rucker | 28 May 1900 |
| RR/10/360 | Referee's report by George Downing Liveing and Arthur William Rucker, on five papers 'On the chief line in the spectrum of the nebulae', 'Note on the spectrum of the nebula of orion' and 'Preliminary note on photographs of the spectrum of the nebula in Orion' by Joseph Norman Lockyer, 'On a re-determination of the principal line in the spectrum of the nebula in Orion, and on the character of the line' and 'Note on the photographic spectrum of the great nebula in Orion' by William Huggins | 27 May 1890 |
| MC/15/10 | Letter from Henry [Edward] Armstrong, 55 Granville Park, Lewisham, London, to Professor [Michael] Foster | 30 January 1889 |
| MC/15/147 | Letter from William de Wiveleslie Abney, Francis Galton & Arthur [William] Rucker, to the Secretaries of the Royal Society | 18 February 1891 |
| PP/22/8 | Paper, 'Electrical interference phenomena somewhat analogous to Newton's rings, but exhibited by waves passing along wires of which a part differs from the rest' by Edwin Henry Barton | 1893 |
| PP/22/8/1 | Manuscript, 'Electrical interference phenomena somewhat analogous to Newton's rings, but exhibited by waves passing along wires of which a part differs from the rest' by Edwin Henry Barton | 1893 |
| MC/16/132 | Letter from Arthur [William] Rucker, to Lord Rayleigh, Secretary of the Royal Society | 18 June 1894 |
| NLB/15/19 | Copy letter from Robert William Frederick Harrison, to Francis Galton, Fellow of the Royal Society | 4 June 1897 |
| MC/16/331 | Letter from Arthur [William] Rucker, 19 Gledhow Gardens, to Lord Rayleigh [John William Strutt] | 12 October 1896 |
| NLB/15/641 | Copy letter from Arthur William Rucker, to Sir Fleetwood Isham Edwards, Privy Purse Office, Buckingham Palace, S.W. | 10 November 1897 |
| NLB/15/639 | Copy letter from Arthur William Rucker, to Professor Andrew Russell Forsyth, Fellow of the Royal Society | 9 November 1897 |
| NLB/15/614 | Copy letter from Arthur William Rucker, to Sir John Simon, Fellow of the Royal Society | 4 November 1897 |
| NLB/15/611 | Copy letter from Arthur William Rucker, to Horace A D Seymour, Royal Mint | 4 November 1897 |
| NLB/15/613 | Copy letter from Arthur William Rucker, to Herrn Professor Albert von Kolliker, Foreign Member Royal Society, Universitat, Wurzburg | 4 November 1897 |
| NLB/15/640 | Copy letter from Arthur William Rucker, to Lieutenant General Sir Richard Strachey, Fellow of the Royal Society | 9 November 1897 |
| MC/15/44 | Letter from Francis Galton, Chairman of the Kew Committee, Kew Observatory, Richmond, to the Secretary of the Royal Society | 4 June 1889 |
| MC/15/235 | Letter from Arthur [William] Rucker, Royal College of Science, London, to [Michael] Foster, Secretary of the Royal Society | 11 November 1891 |
| NLB/15/612 | Copy letter from Arthur William Rucker, to Horace A D Seymour, Royal Mint | 4 November 1897 |
| MC/13/61 | Letter from Arthur W [William] Rücker, Claremont, Leeds, to Professor G G [George Gabriel] Stokes, Secretary of the Royal Society | 14 June 1884 |
| NLB/16/724 | Copy letter from Arthur William Rucker, to Professor [Karl] Pearson, Fellow of the Royal Society | 26 May 1898 |
| MC/15/26 | Letter from Arthur [William] Rücker, Orrington, Clapham Park, to the Secretaries of the Royal Society | 14 March 1889 |
| NLB/16/874 | Copy letter from Arthur William Rucker, to [Professor W] Ramsay | 24 June 1898 |
| NLB/17/452 | Copy letter from Arthur William Rucker, to Professor Oliver Joseph Lodge, Fellow of the Royal Society | 3 November 1898 |
| NLB/17/532 | Copy letter from Arthur William Rucker, to Professor Johannes Wislicenus, Foreign Member of the Royal Society | 14 November 1898 |
| NLB/17/456 | Copy letter from Arthur William Rucker, to Lieutenant Colonel the Right Honourable Sir Fleetwood Isham Edwards | 3 November 1898 |
| MC/18/117 | Letter from [William Huggins], 90 Upper Tulse Hills, to [Robert William Frederick] Harrison | 13 June 1903 |
| MC/15 | Volume 15 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1889-1892 |
| NLB/19/597 | Copy letter from Arthur William Rucker, to Dr John Hall Gladstone, Fellow of the Royal Society | 7 November 1899 |
| NLB/19/565 | Copy letter from Arthur William Rucker, to Horace A D Seymour, Royal Mint | 2 November 1899 |
| MS/547/3/8 | Copy Letter from M [Michael] Foster and Arthur Rucker, The Royal Society, Burlington House, to A B [Alfred Bray] Kempe | 2 November 1899 |
| RR/13/154 | Letter from Meyer Wildermann, on his paper 'Experimental proof of van 't Hoff's law' to Arthur William Rucker | 10 March 1897 |
| NLB/38/688 | Copy letter from Joseph Larmor and Archibald Geikie, to Sir Arthur William Rucker, Fellow of the Royal Society | 22 October 1908 |
| ACS/1/1/196 | Letter from Lord Kelvin [William Thomson], The University, Glasgow, to [Alan Archibald] Campbell Swinton, 66 Victoria [Street], London, S. W. | 24 January 1899 |
| MC/24/139 | Letter from Arthur [William] Rücker, Everington House, Newbury, to [Robert] Harrison, [Royal Society] | 4 March 1909 |
| MC/24/138 | Letter from Arthur [William] Rücker, Everington House, Newbury, to [Robert] Harrison, [Royal Society] | 16 February 1909 |
| MS/547/4/43 | Letter from Arthur W Rucker, The Royal Society, Burlington House, to A B [Alfred Bray] Kempe | 27 November 1900 |
| MC/17 | Volume 17 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1897-1899 |
| MC/25/209 | Letter from Arthur [William] Rucker, M4, Artillery Mansions, Victoria Street, S.W, to Sir Joseph Larmor, [Royal Society] | 16 March 1910 |
| MC/25/219 | Letter from Arthur Schuster, Kent House, Victoria Park, Manchester, to [Robert] Harrison, [Royal Society] | 20 April 1910 |
| MC/20/329 | Letter from Arthur [William] Rucker, 19 Gledhow Gardens, to [Richard Tetley] Glazebrook | 7 January 1905 |
| MC/18 | Volume 18 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1903 |
| MC/30/203 | Letter from [Thomas Edward] Thorpe, Whinfield, Salcombe, [South] Devon, to Mr [Robert] Harrison, [Royal Society] | 24 November 1915 |
| NLB/52/354 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Thomas Edward Thorpe, FRS | 15 November 1915 |
| MC/31/214 | Letter from [Thomas Edward] Thorpe, Whinfield, Salcombe, S. Devon, to Mr [Robert] Harrison, [Royal Society] | 28 January 1916 |
| ACS/1/1/339 | Letter from Arthur [William] Rücker, The Royal Society, Burlington House, London, W., to [Alan Archibald Campbell] Swinton, 66 Victoria [Street], London, S. W. | 11 April 1899 |
| RR/12/269 | Referee's report by Arthur William Rucker, on a paper 'Experimental investigation on the effective temperature of the Sun. Experiments made at Daramona, Streete, Co. Westmeath' by William Edward Wilson and J P Gray | nd [1894] |
| MC/20 | Volume 20 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1905 |
| ACS/1/1/340 | Letter from Arthur [William] Rücker, 19 Gledhill Gardens, S. W., to Mr [Alan Archibald Campbell] Swinton, 66 Victoria [Street], London, S. W. | 15 May 1907 |
| IM/005231 | Royal Society Officers circa 1895-1900 | 1895-1900 |
| ACS/1/1/300 | Letter from Charles [Algernon] Parsons, Brown's Hotel, London, W., to [Alan Archibald Campbell] Swinton | 25 February 1909 |