| Reference number | Title | Date |
| NLB/8/96 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 14 July 1893 |
| EC/1875/29 | Roberts-Austen, Sir William Chandler: certificate of election to the Royal Society | |
| MS/377/1/9 | Letter from William Chandler Roberts-Austen, Royal Mint, to [William Fletcher] Barrett | 7 October 1890 |
| MS/743/1/158 | Letter from William Chandler Roberts-Austen, The Royal Mint, to [John Hall] Gladstone | 11 February 1898 |
| MS/743/1/122 | Letter from William Chandler Roberts-Austen, Chilworth, to [John Hall] Gladstone | 12 January 1890 |
| MS/743/1/161 | Letter from William Chandler Robert-Austen, The Royal Mint, to [John Hall] Gladstone | 16 February 1900 |
| NLB/18/40 | Copy letter from Theodore E James, to [Messrs Harrison & Sons] | 4 January 1899 |
| NLB/4/491 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 16 June 1890 |
| NLB/2/237 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 9 March 1888 |
| NLB/2/258 | Copy letter from an unknown correspondent, to Harrison & Sons | 14 March 1888 |
| NLB/2/808 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen | 10 November 1888 |
| NLB/2/793 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 7 November 1888 |
| NLB/6/1106 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen | 25 October 1892 |
| NLB/6/7 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 8 February 1892 |
| NLB/10/258 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 1 November 1894 |
| NLB/6/1017 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen | 4 October 1892 |
| NLB/6/994 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 29 September 1892 |
| NLB/5/362 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, [Fellow of the Royal Society] | 26 May 1891 |
| NLB/11/218 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen | 15 May 1895 |
| NLB/7/486 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 1 March 1893 |
| NLB/5/904 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 12 November 1891 |
| NLB/5/913 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, [Fellow of the Royal Society] | 16 November 1891 |
| NLB/7/790 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen | 25 April 1893 |
| NLB/8/73 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, [Fellow of the Royal Society] | 12 July 1893 |
| NLB/7/789 | Copy letter from Herbert Rix, to W Bayley Marshall, Richmond Hill, Birmingham | 26 April 1893 |
| NLB/10/433 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen | 23 November 1894 |
| NLB/10/280 | Copy letter from Herbert Rix, to Professor Michael Foster | 5 November 1894 |
| NLB/11/76 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 11 April 1895 |
| NLB/8/663 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 5 December 1893 |
| NLB/10/801 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 7 February 1895 |
| NLB/11/524 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 16 July 1895 |
| NLB/20/101 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 31 January 1900 |
| NLB/13/707 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 9 November 1896 |
| NLB/11/107 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 22 April 1895 |
| NLB/11/153 | Copy letter from Herbert Rix, to Thomas Andrews, Fellow of the Royal Society | 3 May 1895 |
| NLB/11/165 | Copy letter from Herbret Rix, to Lord Rayleigh [John William Strutt], Fellow of the Royal Society | 7 May 1895 |
| NLB/11/401 | Copy letter from Herbert Rix, to Lord Rayleigh [John William Strutt] | 21 June 1895 |
| NLB/9/711 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 3 July 1894 |
| NLB/13/378 | Copy letter from Theodore E James, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 6 August 1896 |
| NLB/13/379 | Copy letter from Theodore E James, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 10 August 1896 |
| NLB/13/371 | Copy letter from Theodore E James, to Messrs Harrison & Sons | 5 July [August] 1896 |
| NLB/12/542 | Copy letter from an unknown correspondent, to Messrs West, Newman & Company, 54 Hatton Garden, E.C. | 10 March 1896 |
| NLB/12/618 | Copy letter from an unknown correspondent, to Messrs West, Newman & Company, 54 Hatton Garden, E.C. | 24 March 1896 |
| NLB/13/281 | Copy letter from Robert William Frederick Harrison, to Messrs Harrison & Sons | 21 July 1896 |
| NLB/13/260 | Copy letter from Michael Foster and Lord Rayleigh [John William Strutt], to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 15 July 1896 |
| NLB/13/316 | Copy letter from Robert William Frederick Harrison, to Messrs Berthaud Frères, 9 Rue Cadet, Paris | 24 July 1896 |
| NLB/12/492 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 28 February 1896 |
| NLB/12/427 | Copy letter from Herbert Rix, to Messrs Newton & Company, 3 Fleet Street, E.C. | 18 February 1896 |
| NLB/12/735 | Copy letter from Herbert Rix, to Messrs Harrison & Sons | 23 April 1896 |
| NLB/13/762 | Copy letter from Robert William Frederick Harrison, to Professor [William Chandler] Roberts-Austen | 20 November 1896 |
| NLB/12/426 | Copy letter from Herbert Rix, to Messrs Drake & Gorham | 18 February 1896 |
| NLB/12/403 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 14 February 1896 |
| RR/15/51 | Referee's report by William Chandler Roberts-Austen, on the Bakerian lecture 'The crytalline structure of metals' by James Alfred Ewing and Walter Rosenhain | July 1900 |
| NLB/14/275 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 8 February 1897 |
| NLB/14/391 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 3 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/18/240 | Copy letter from Robert William Frederick Harrison, to Sir William Roberts-Austen, Fellow of the Royal Society | 10 February 1899 |
| NLB/22/510 | Copy letter from Robert William Frederick Harrison, to Sir William [Chandler] Roberts-Austen, Fellow of the Royal Society | 24 May 1901 |
| NLB/15/495 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 14 October 1897 |
| NLB/15/703 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 19 November 1897 |
| NLB/16/138 | Copy letter from Robert William Frederick Harrison, to Professor Roberts-Austen, Fellow of the Royal Society | 8 February 1898 |
| NLB/18/672 | Copy letter from Michael Foster, to [Sir William] Roberts-Austen | [20 April 1899] |
| NLB/18/209 | Copy letter from Robert William Frederick Harrison, to Sir W C Roberts-Austen, Fellow of the Royal Society | 7 February 1899 |
| NLB/15/671 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 13 November 1897 |
| NLB/16/496 | Copy letter from Robert William Frederick Harrison, to Thomas Andrews, Fellow of the Royal Society | 22 April 1898 |
| NLB/16/597 | Copy letter from Robert William Frederick Harrison, to Professor Roberts-Austen, Fellow of the Royal Society | [5] May 1898 |
| NLB/16/788 | Copy letter from Robert William Frederick Harrison, to Messrs Morgan & Kidd | 6 June 1898 |
| NLB/16/771 | Copy letter from Robert William Frederick Harrison, to Messrs Morgan & kidd | 3 June 1898 |
| NLB/16/475 | Copy letter from Robert William Frederick Harrison, to Professor Roberts-Austen, Fellow of the Royal Society | 20 April 1898 |
| NLB/16/748 | Copy letter from Robert William Frederick Harrison, to Messrs Morgan & Kidd, Richmond | 1 June 1898 |
| NLB/17/345 | Copy letter from Arthur William Rucker, to Lord Rayleigh [John William Strutt], Sir Andrew Noble, Sir John Wolfe Wolfe-Barrey, Professor William Chandler Roberts-Austen, Dr Thomas Edward Thorpe, [Fellows of the Royal Society] | 15 October 1898 |
| NLB/19/71 | Copy letter from Robert William Frederick Harrison, to H Jackson | 13 June 1899 |
| NLB/19/17 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 2 June 1899 |
| NLB/19/16 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 2 June 1899 |
| NLB/19/581 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 4 November 1899 |
| NLB/19/543 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, [Fellow of the Royal Society] | 28 October 1899 |
| NLB/19/478 | Copy letter from Robert William Frederick Harrison, to Sir William Roberts Austen, [Fellow of the Royal Society] | 11 October 1899 |
| NLB/18/654 | Copy letter from an unknown correspondent, to Sir William Roberts-Austen, Fellow of the Royal Society | 17 April 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/20/682 | Copy letter from Theodore E James, to Dr J K Rose | 15 June 1900 |
| NLB/22/196 | Copy letter from Robert William Frederick Harrison, to Sir William [Chandler] Roberts-Austen, Fellow of the Royal Society | 20 March 1901 |
| NLB/20/523 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen | 14 May 1900 |
| NLB/24/333 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 28 April 1902 |
| NLB/21/239 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 8 October 1900 |
| NLB/22/10 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 11 February 1901 |
| NLB/22/361 | Copy letter from Robert William Frederick Harrison, to Sir [William Chandler] Roberts Austen, Fellow of the Royal Society | 1 May 1901 |
| NLB/21/621 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 19 December 1900 |
| NLB/22/358 | Copy letter from Robert William Frederick Harrison, to Sir [William Chandler] Roberts Austen, Fellow of the Royal Society | 1 May 1901 |
| NLB/22/602 | Copy letter from Robert William Frederick Harrison, to Sir William [Chandler] Roberts-Austen, Fellow of the Royal Society | 11 June 1901 |
| NLB/24/78 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 25 February 1902 |
| NLB/25/305 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 15 October 1902 |
| NLB/23/1/513 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, [Fellow of the Royal Society] | 25 November 1901 |
| NLB/24/332 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 28 April 1902 |
| NLB/24/478 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 23 May 1902 |
| NLB/24/334 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 28 April 1902 |
| NLB/24/35 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 19 February 1902 |
| NLB/24/313 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 24 April 1902 |
| NLB/24/344 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts Austen, Fellow of the Royal Society | 30 April 1902 |
| NLB/24/242 | Copy letter from Theodore E James, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 10 April 1902 |
| NLB/25/398 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society, and Dr T K Rose | 30 October 1902 |
| NLB/25/348 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen | 20 October 1902 |
| NLB/24/568 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 3 June 1902 |
| NLB/25/320 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 16 October 1902 |
| NLB/24/636 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 10 June 1902 |
| NLB/25/573 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, [Fellow of the Royal Society] | 21 November 1902 |
| RR/8/157 | Referee's report by William Chandler Roberts-Austen, on an untraced paper by Mr Fawsitt | 23 April 1879 |
| RR/11/193 | Referee's report by William Chandler Roberts-Austen, on a paper 'On the liquation of metals of the platinum group' by Edward Matthey | 28 March 1892 |
| RR/10/210 | Referee's report by Edward Frankland, on a paper 'On certain mechanical properties of metals considered in relation to the periodic law' by William Chandler Roberts-Austen | 19 March 1888 |
| RR/11/270 | Letter from William Chandler Roberts Austen, on a paper 'On the metallurgy of lead' by J H Hannay to the Secretary of the Royal Society | 1 June 1893 |
| RR/13/233 | Referee's report by William Chandler Roberts-Austen, on a paper 'On the occlusion of hydrogen and oxygen by palladium' by Ludwig Mond, William Ramsay and John Shields | 8 January 1898 |
| RR/13/92 | Referee's report by Charles Thomas Heycock, on a paper 'On the structure of metals, its origin and changes' by M F Osmond and William Chandler Roberts-Austen | 22 June 1896 |
| RR/12/367 | Letter from William Chandler Roberts-Austen, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'On the occlusion of oxygen and hydrogen by platinum black. - Part I' by Ludwig Mond, William Ramsay and John Shields | 9 August 1895 |
| RR/13/102 | Referee's report by George Matthey, on the Bakerian Lecture 'On the diffusion of metals' by William Chandler Roberts-Austen | 9 March 1896 |
| RR/13/101 | Referee's report by Thomas Edward Thorpe, on the Bakerian Lecture 'On the diffusion of metals' by William Chandler Roberts-Austen | 2 March 1896 |
| RR/13/230 | Referee's report by William Chandler Roberts-Austen, on a paper 'On the occlusion of oxygen and hydrogen by platinum black' by Ludwig Mond, William Ramsay and John Shields | 27 July 1897 |
| RR/7/318 | Referee's report by Henry Enfield Roscoe, on a paper 'On the quantitative analysis of certain alloys by means of the spectroscope' by Joseph Norman Lockyer and William Chandler Roberts-Austen | 2 February 1874 |
| RR/11/277 | Letter from William Chandler Roberts Austen, on a paper 'On the metallurgy of lead' by J H Hannay to the Secretary of the Royal Society | 16 August 1893 |
| RR/14/184 | Referee's report by William Chandler Roberts-Austen, on a paper 'Gold-aluminium alloys' by Charles Thomas Heycock and Francis Henry Neville | nd [November 1899] |
| MS/743/1/150 | Letter from William Chandler Roberts-Austen, The Royal Mint, 3 August 1983, to [John Hall] Gladstone | 3 August 1893 |
| NLB/6/1025 | Copy letter from Herbert Rix, to Professor William Chandler Robarts-Austen | 5 October 1892 |
| NLB/5/879 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 9 November 1891 |
| NLB/5/927 | Copy letter from Herbert Rix, to Professor Michael Foster, [Royal Society] | 17 November 1891 |
| NLB/8/645 | Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, [Fellow of the Royal Society] | 1 December 1893 |
| NLB/10/732 | Copy letter from Herbert Rix, to Le Directeur, Comptoir Lyon-Alemand, 13 Rue Montmorency, Paris | 28 January 1895 |
| NLB/11/108 | Copy letter from Herbert Rix, to William Henry Preece, Fellow of the Royal Society | 22 April 1895 |
| NLB/13/21 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary, Royal Society | 29 May 1896 |
| NLB/13/127 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 19 June 1896 |
| NLB/13/778 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary, Royal Society | 23 November 1896 |
| RR/15/146 | Referee's report by William Chandler Roberts-Austen, on a paper 'Micro-crystalline structure of platinum' by Thomas Andrews | 21 December 1901 |
| NLB/14/401 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, Secretary, Royal Society | 5 March 1897 |
| NLB/15/235 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 21 July 1897 |
| NLB/16/461 | Copy letter from Robert William Frederick Harrison, to Professor Arthur William Rucker, [Fellow of the Royal Society] | 6 April 1898 |
| NLB/15/509 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 19 October 1897 |
| NLB/15/712 | Copy letter from Robert William Frederick Harrison, to Professor Michael Foster, Secretary, Royal Society | 22 November 1897 |
| NLB/17/15 | Copy letter from Robert William Frederick Harrison, to Messrs Morgan & Kidd | 1 July 1898 |
| NLB/17/549 | Copy letter from Robert William Frederick Harrison, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society | 17 November 1898 |
| NLB/21/441 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 19 November 1900 |
| RR/11/271 | Referee's report by William Chandler Roberts Austen, on a paper 'On the metallurgy of lead' by J H Hannay | 1 June 1893 |
| RR/10/211 | Letter from William Chandler Roberts-Austen, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'On certain mechanical properties of metals considered in relation to the periodic law' by William Chandler Roberts-Austen | 4 August 1888 |
| RR/15/55 | Referee's report by William Chandler Roberts-Austen, on a paper 'An investigation of the spectra of flames resulting from operations in the open hearth and 'basic' bessemer processes' by Walter Noel Hartley and Hugh Ramage | December 1900 |
| NLB/20/390 | Copy letter from Robert William Frederick Harrison, to Sir William Chandler Roberts-Austen, Fellow of the Royal Society | 6 April 1900 |
| RR/11/273 | Letter from William Chandler Roberts Austen, on a paper 'On the metallurgy of lead' by J H Hannay to the Secretary of the Royal Society | 6 June 1893 |
| RR/13/93 | Referee's report by William Cawthorne Unwin, on a paper 'On the structure of metals, its origin and changes' by M F Osmond and William Chandler Roberts-Austen | 8 July 1896 |
| RR/13/166 | Referee's report by William Chandler Roberts-Austen, on his paper 'On micro-physical structure of pure gold and micro-segregation in gold alloys' by Thomas Andrews | 10 May 1897 |
| RR/15/1 | Referee's report by William Chander Roberts-Austen, on a paper 'An experimental investigation into the flow of marble' by Frank Dawson Adams and John Thomas Nicolson | July 1900 |
| PP/17/26/2 | Diagrams, experimental apparatus and results by W C [William Chandler] Roberts-Austen | 1891 |
| PP/17/26/3 | Photograph, experimental results by W C [William Chandler] Roberts-Austen | 22 January 1891 |
| PP/17/26 | Paper, 'On certain properties of metals considered in relation to the periodic law' by W C [William Chandler] Roberts-Austen | 1891 |
| RR/7/317 | Referee's report by Mervyn Herbert Nevil Story-Maskelyne, on a paper 'On the quantitative analysis of certain alloys by means of the spectroscope' by Joseph Norman Lockyer and William Chandler Roberts-Austen | 12 July 1874 |
| RR/7/398 | Referee's report by George Carey Foster, on a paper 'On the liquation, fusibility, and density of certain alloys of silver and copper' by William Chandler Roberts-Austen | 22 March 1875 |
| RR/12/368 | Referee's report by William Chandler Roberts-Austen, on a paper 'On the occlusion of oxygen and hydrogen by platinum black. - Part I' by Ludwig Mond, William Ramsay and John Shields | 9 August 1895 |
| PP/17/26/1 | Manuscript, 'On certain properties of metals considered in relation to the periodic law' by W C [William Chandler] Roberts-Austen | 1891 |
| NLB/12/602 | Copy letter from Michael Foster, to Sir Courtenay E Boyle, Secretary, Board of Trade, Whitehall Gardens, S.W. | 20 March 1896 |