| RefNo | Title | Date |
| IM/000845 | Chree, Charles | nd |
| MM/15/57 | "The stresses and strains in isotropic elastic solid elipsoids in equilibrium under bodily forces derivable from a potential of the second degree", by Charles Chree | March 1894 |
| EC/1897/10 | Chree, Charles: certificate of election to the Royal Society | |
| IM/000704 | Callendar, Hugh Longbourne | 2001 |
| RR/35/40 | Referee's report by Arthur Schuster, on a paper 'Recurrence phenomena in terrestrial magnetism' by Charles Chree and J M Stagg | May 1927 |
| NLB/45/208 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 19 January 1912 |
| NLB/2/691 | Copy letter from Herbert Rix, to Edward John Routh, Fellow of the Royal Society | 12 October 1888 |
| NLB/4/316 | Copy letter from Herbert Rix, to Charles Chree, Kings College, Cambridge | 18 April 1890 |
| NLB/4/315 | Copy letter from Herbert Rix, to Charles Chree, Kings College, Cambridge | 18 April 1890 |
| NLB/22/606 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society, 25 Mount Ararat Road, Richmond, Surrey | 12 June 1901 |
| NLB/7/807 | Copy letter from Herbert Rix, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 1 May 1893 |
| NLB/7/885 | Copy letter from Lord Rayleigh [John William Strutt], to Francis Galton, Fellow of the Royal Society, Chairman of the Kew Committee | 22 May 1893 |
| NLB/16/268 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, Kew Observatory, Old Deer Park, Richmond, Surrey | 4 March 1898 |
| NLB/19/285 | Copy letter from Robert William Frederick Harrison, to Charles Chree, [Fellow of the Royal Society] | 27 July 1899 |
| NLB/18/492 | Copy letter from Theodore E James, to C Chree, Fellow of the Royal Society | 22 March 1899 |
| NLB/10/855 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 19 February 1895 |
| NLB/20/561 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | [22] May 1900 |
| NLB/10/872 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 25 February 1895 |
| NLB/10/500 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 7 December 1894 |
| NLB/8/1135 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 5 March 1894 |
| NLB/10/517 | Copy letter from Herbert Rix, to Charles Chree, 25 Mount Ararat Road, Richmond, Surrey | 8 December 1894 |
| NLB/8/957 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 29 January 1894 |
| NLB/10/862 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond | 21 February 1895 |
| NLB/10/859 | Copy letter from Herbert Rix, to Mr Charles Chree | 20 February 1895 |
| NLB/10/799 | Copy letter from Lord Rayleigh, John William Strutt, to Mr Charles Chree | 6 February 1895 |
| NLB/9/120 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 3 April 1894 |
| NLB/10/935 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 11 March 1895 |
| NLB/9/184 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 12 April 1894 |
| NLB/9/355 | Copy letter from Herbert Rix, to Professor Charles Niven, Fellow of the Royal Society | 4 May 1894 |
| NLB/11/1 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 2 April 1895 |
| NLB/9/330 | Copy letter from Herbert Rix, to Charles Chree, Secretary of the Incorporated Kew Committee, Kew Observatory, Richmond, Surrey | 30 April 1894 |
| NLB/9/607 | Copy letter from Herbert Rix, to Charles Chree, Superintendent, Kew Observatory, Richmond, Surrey | 14 June 1894 |
| NLB/12/657 | Copy letter from Herbert Rix, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 31 March 1896 |
| NLB/31/287 | Copy letter from Archibald Geikie, to Dr [Charles] Chree, [Fellow of the Royal Society] | 22 July 1905 |
| NLB/12/130 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 13 December 1895 |
| NLB/13/60 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 3 June 1896 |
| NLB/18/439 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 9 March 1899 |
| NLB/13/100 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 12 June 1896 |
| NLB/13/487 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 26 September 1896 |
| NLB/12/94 | Copy letter from Herbert Rix, to Charles Chree, [Kew Observatory, Richmond, Surrey] | 6 December 1895 |
| NLB/13/606 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree | 15 October 1896 |
| NLB/14/164 | Copy letter from John Evans, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 20 January 1897 |
| NLB/13/509 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 2 October 1896 |
| NLB/12/37 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 23 November 1895 |
| NLB/13/688 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 4 November 1896 |
| NLB/13/689 | Copy letter from Michael Foster, to the Secretary, Her Majesty's Treasury, Whitehall, S.W. | 4 November 1896 |
| NLB/12/868 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 22 May 1896 |
| NLB/13/837 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 7 December 1896 |
| NLB/15/199 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 14 July 1897 |
| RR/17/146 | Referee's report by Arthur Schuster, on a paper 'Magnetic declination at Kew Observatory, 1890 to 1900' by Charles Chree | [December 1907] |
| NLB/50 | New Letter Book volume 50, copy letters sent from Royal Society administration | 6 April 1914-17 November 1914 |
| NLB/17/584 | Copy letter from an unknown correspondent, to Professor Arthur William Rucker, Secretary, Royal Society | 22 November 1898 |
| RR/17/17 | Referee's report by Charles Thomson Rees Wilson, on a paper 'A discussion of atmospheric electric potential results at Kew from selected days during the seven Years 1898 to 1904' by Charles Chree | 6 March 1906 |
| RR/16/159 | Referee's report by Arthur Schuster, on a paper 'An analysis on the results from the Falmouth Magnetographs on "quiet" days during the twelve years 1891 to 1902' by Charles Chree | December 1904 |
| RR/16/156 | Letter from Joseph Larmor, on a paper 'An enquiry into the nature of the relationship between sunspot frequency and terrestrial magnetism' by Charles Chree to the author | March 1904 |
| RR/17/18 | Referee's report by Arthur Schuster, on a paper 'A discussion of atmospheric electric potential results at Kew from selected days during the seven Years 1898 to 1904' by Charles Chree | [April 1906] |
| NLB/15/544 | Copy letter from Robert William Frederick Harrison, to Charles Chree, Fellow of the Royal Society, Kew Observatory | 26 October 1897 |
| RR/16/219 | Second referee's report by Horace Lamb, on a paper 'The seismic effect of tidal stresses' by Richard Dixon Oldham | 3 June 1904 |
| NLB/52/297 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Charles Chree, FRS | 4 November 1915 |
| NLB/52/314 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Clinton Coleridge Farr Esquire; Canterbury College, Christchurch, New Zealand | 8 November 1915 |
| NLB/19/106 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, 25 Mount Ararat Road, Richmond, Surrey | 22 June 1899 |
| NLB/15/179 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 9 July 1897 |
| NLB/18/469 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society | 15 March 1899 |
| NLB/15/126 | Copy letter from Robert William Frederick Harrison, to Charles Chree, Fellow of the Royal Society | 3 July 1897 |
| NLB/16/594 | Copy letter from an unknown correspondent, to Dr C Chree, Fellow of the Royal Society | 5 May 1898 |
| NLB/15/582 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 1 November 1897 |
| NLB/16/320 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society | 18 March 1898 |
| NLB/16/421 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 1 April 1898 |
| NLB/19/307 | Copy letter from Robert William Frederick Harrison, to Charles Chree, Fellow of the Royal Society | 31 July 1899 |
| NLB/16/856 | Copy letter from an unknown correspondent, to C S Jones | 21 June 1898 |
| NLB/17/112 | Copy letter from Robert William Frederick Harrison, to Charles Chree, Fellow of the Royal Society | 20 July 1898 |
| NLB/19/29 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 5 June 1899 |
| NLB/18/851 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 31 May 1899 |
| NLB/18/22 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society | 23 December 1898 |
| NLB/20/761 | Copy letter from Robert William Frederick Harrison, to Charles Chree, [Fellow of the Royal Society] | 3 July 1900 |
| NLB/17/443 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 1 November 1898 |
| NLB/18/422 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society | 8 March 1899 |
| NLB/18/206 | Copy letter from Robert William Frederick Harrison, to Dr Chree | 7 February 1899 |
| NLB/19/254 | Copy extract from a paper by Dr Charles Chree, 'Collimator Magnets' | [July 1899] |
| NLB/19/196 | Copy letter from Arthur William Rucker, to Dr Charles Chree, Fellow of the Royal Society | 11 July 1899 |
| NLB/19/40 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 6 June 1899 |
| NLB/19/220 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 14 July 1899 |
| NLB/18/456 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Kew Observatory, Richmond, Surrey | 14 March 1899 |
| NLB/19/342 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 11 August 1899 |
| NLB/18/394 | Copy letter from R Chapman, Dr C Chree, Fellow of the Royal Society, Kew Observatory, Richmond, Surrey | 3 March 1899 |
| NLB/20/537 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, national Physical Laboratory, Old Deer Park, Richmond, Surrey | 17 May 1900 |
| NLB/18/768 | Copy letter from Robert William Frederick Harrison, to Dr C Chree, Fellow of the Royal Society | 10 May 1899 |
| NLB/20/689 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 18 June 1900 |
| NLB/23/2/52 | Copy letter from Sir Michael Foster, to Dr [Charles] Chree, Fellow of the Royal Society | 26 March 1901 |
| NLB/20/539 | Copy letter from an unknown correspondent, to Messrs Harrison, & Sons, St Martin's Lane | 17 May 1900 |
| NLB/20/690 | Copy letter from an unknown correspondent, to Messrs Harvey & Peak, Charring Cross Road | 18 June 1900 |
| NLB/22/42 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society | 18 February 1901 |
| NLB/22/87 | Copy letter from Sir Michael Foster, to Dr [Charles] Chree, Fellow of the Royal Society | 28 February 1901 |
| NLB/22/139 | Copy letter from Sir Michael Foster, to Dr [Charles] Chree, Fellow of the Royal Society | 8 March 1901 |
| NLB/22/245 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society | 29 March 1901 |
| NLB/31/248 | Copy letter from Joseph Larmor, to Charles Chree, [Fellow of the Royal Society] | 14 July 1905 |
| NLB/23/2/470 | Copy letter from Joseph Larmor, to Dr Charles Chree, Fellow of the Royal Society | 5 May 1904 |
| NLB/23/2/361 | Copy letter from Joseph Larmor, to Dr Charles Chree, Fellow of the Royal Society | 7 July 1903 |
| NLB/33/48 | Copy telegram from an unknown correspondent, to Charles Chree, [Fellow of the Royal Society], Richmond, Surrey | [20 June 1906] |
| NLB/23/2/539 | Copy letter from Joseph Larmor and Archibald Geikie, to Dr Richard Tetley Glazebrook, Fellow of the Royal Society | 28 October 1904 |
| NLB/24/625 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, 25 Mount Ararat Road, Richmond, Surrey | 10 June 1902 |
| NLB/25/371 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 24 October 1902 |
| NLB/24/679 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 17 June 1902 |
| NLB/24/834 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 18 July 1902 |
| RR/19/27 | Referee's report by William Davidson Niven, on a paper 'Some phenomena of sunspots and of terrestrial magnetism at Kew Observatory' by Charles Chree | [May 1912] |
| NLB/27/863 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 14 December 1903 |
| NLB/27/194 | Copy letter from Joseph Larmor, to Dr Charles Chree, Fellow of the Royal Society | 15 July 1903 |
| NLB/26/327 | Copy letter from Robert William Frederick Harrison to, Dr Charles Chree, Fellow of the Royal Society | 27 February 1903 |
| NLB/29/215 | Copy letter from Theodore E James, to Charles Chree, Fellow of the Royal Society | 3 August 1904 |
| NLB/28/133 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 15 January 1904 |
| NLB/30/28 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 17 January 1905 |
| NLB/30/18 | Copy letter from Joseph Larmor, to Charles Chree, [Fellow of the Royal Society] | 17 January 1905 |
| NLB/30/26 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 16 January 1905 |
| NLB/30/258 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 20 February 1905 |
| NLB/31/675 | Copy letter from Archibald Geikie, to Charles Chree, [Fellow of the Royal Society] | 31 October 1905 |
| NLB/30/227 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, The National Physical Laboratory, Richmond, Surrey | 15 February 1905 |
| NLB/38/223 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 2 July 1908 |
| NLB/33/203 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 16 July 1906 |
| NLB/40/166 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 27 April 1909 |
| NLB/29/512 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 29 October 1904 |
| NLB/37/485 | Copy letter from Archibald Geikie to Dr Charles Chree | 26 March 1908 |
| NLB/47/535 | Copy letter from Robert William Frederick Harrison to Dr Charles Chree FRS | 17 February 1913 |
| NLB/29/527 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, National Physical Laboratory, Kew Observatory Department, Richmond, Surrey | 29 October 1904 |
| NLB/31/227 | Copy letter from Joseph Larmor, to Charles Chree, [Fellow of the Royal Society] | 11 July 1905 |
| NLB/29/744 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 5 December 1904 |
| NLB/33/133 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 3 July 1906 |
| NLB/33/281 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 27 July 1906 |
| NLB/33/258 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 24 July 1906 |
| NLB/32/560 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, [Fellow of the Royal Society] | 4 April 1906 |
| NLB/32/551 | Copy letter from Joseph Larmor, to Sir William Christie, Fellow of the Royal Society | 30 March 1906 |
| NLB/34/358 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 9 January 1907 |
| NLB/33/567 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 2 October 1906 |
| NLB/32/703 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 11 May 1906 |
| NLB/37/134 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 30 January 1908 |
| NLB/35/157 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, [Fellow of the Royal Society] | 26 April 1907 |
| NLB/34/50 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 21 November 1906 |
| NLB/34/72 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 23 November 1906 |
| NLB/34/82 | Copy letter from Archibald Geikie, to Dr Charles Chree, [Fellow of the Royal Society] | 24 November 1906 |
| NLB/36/455 | Copy letter from Archibald Geikie, to Dr Charles Chree, [Fellow of the Royal Society] | 1 November 1907 |
| NLB/35/173 | Copy letter from Archibald Geikie, to Dr Charles Chree, [Fellow of the Royal Society] | 29 April 1907 |
| NLB/34/304 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 2 January 1907 |
| NLB/34/93 | Copy letter from Archibald Geikie, to Dr Charles Chree, [Fellow of the Royal Society] | 27 November 1906 |
| NLB/34/713 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 1 March 1907 |
| NLB/34/300 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 28 December 1906 |
| NLB/34/362 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 10 January 1907 |
| NLB/37/493 | Copy letter from Archibald Geikie to Glazebrook [Dr Richard Tetley Glazebrook, Fellow of the Royal Society] | 30 March 1908 |
| NLB/34/402 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 15 January 1907 |
| NLB/38/559 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 23 September 1908 |
| NLB/34/896 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 22 March 1907 |
| NLB/34/774 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 7 March 1907 |
| NLB/38/87 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 15 June 1908 |
| NLB/34/817 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 14 March 1907 |
| NLB/36/528 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 11 November 1907 |
| NLB/38/584 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 1 October 1908 |
| NLB/36/638 | Copy letter from Archibald Geikie, to Charles Chree, Fellow of the Royal Society | 23 November 1907 |
| NLB/37/494 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 30 March 1908 |
| NLB/36/767 | Copy letter from Joseph Larmor, to Charles Chree, [Fellow of the Royal Society] | 12 December 1907 |
| NLB/37/298 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 28 February 1908 |
| NLB/37/430 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree, Fellow of the Royal Society | 18 March 1908 |
| NLB/37/418 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 17 March 1908 |
| NLB/37/667 | Copy letter from Archibald Geikie to Dr [Charles] Chree, Fellow of the Royal Society | 29 April 1908 |
| NLB/37/659 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree. Fellow of the Royal Society | 28 April 1908 |
| NLB/38/155 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 20 June 1908 |
| NLB/40/192 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 30 April 1909 |
| NLB/37/750 | Copy letter from Robert William Frederick Harrison to J Warren Kellogh, Encyclopedia Britannica Department, The Times, Printing House Square, EC | 8 May 1908 |
| NLB/38/144 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 19 June 1908 |
| NLB/39/2 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 13 November 1908 |
| NLB/39/160 | Copy letter from Archibald Geikie to Dr [Richard Tetley] Glazebrook | 4 December 1908 |
| NLB/39/139 | Copy letter from Robert William Frederick Harrison to Dr [Charles] Chree | 2 December 1908 |
| NLB/39/473 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 25 January 1909 |
| NLB/38/599 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 7 October 1908 |
| NLB/38/407 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 30 July 1908 |
| NLB/38/327 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 15 July 1908 |
| NLB/39/406 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree, Fellow of the Royal Society | 19 January 1909 |
| NLB/40/137 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 23 April 1909 |
| NLB/38/689 | Copy letter from Joseph Larmor and Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 22 October 1908 |
| NLB/40/221 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 3 May 1909 |
| NLB/40/178 | Copy letter from Joseph Larmor to [Charles] Chree | 26 April 1909 |
| NLB/43/389 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 20 December 1910 |
| NLB/38/643 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 16 October 1908 |
| NLB/40/219 | Copy letter from Robert William Frederick Harrison to Dr Alexander Russell, 10 Richmond Bridge Mansions, East Twickenham | 3 May 1909 |
| NLB/44/457 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 14 July 1911 |
| NLB/40/800 | Copy letter from Robert William Frederick Harrison to Sir Archibald Geikie, KCB, President RS | 25 August 1909 |
| NLB/42/747 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 30 September 1910 |
| NLB/40/610 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 7 July 1909 |
| NLB/42/789 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 12 October 1910 |
| NLB/42/314 | Copy letter from Robert William Frederick Harrison to Dr Chalres Chree, FRS | 18 May 1910 |
| NLB/42/62 | Copy letter from Robert William Frederick Harrison to Dr W [William] N [Napier] Shaw FRS | 18 March 1910 |
| NLB/43/714 | Copy letter from Dr Joseph Larmor, to Dr Charles Chree, Fellow of the Royal Society | 16 March 1911 |
| NLB/42/198 | Copy letter from Robert William Frederick Harrison to Dr [Charles] Chree | 22 April 1910 |
| NLB/42/134 | Copy letter from Robert William Frederick Harrison to Dr [Charles] Chree | 11 April 1910 |
| NLB/42/203 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 25 April 1910 |
| NLB/42/197 | Copy letter from Robert William Frederick Harrison to Dr Charles Chree FRS, Kew Observatory, Old Deer Park, Richmond, Surrey | 22 April 1910 |
| NLB/42/264 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree, Old Deer Park, Richmond, Surrey | 3 May 1910 |
| NLB/43/56 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 31 October 1910 |
| NLB/41/742 | Copy letter from Joseph Larmor, to Dr Charles Chree, Fellow of the Royal Society | 19 February 1910 |
| NLB/42/719 | Copy letter from Thoedore E James to Dr [Charles] Chree FRS | 19 September 1910 |
| NLB/42/231 | Copy letter from Joseph Larmor to Dr C [Charles] Chree FRS | 28 April 1910 |
| NLB/41/683 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 4 February 1910 |
| NLB/42/380 | Copy letter from Robert William Frederick Harrison to Dr Charles Chree FRS, Old Deer Park, Richmond, Surrey | 1 June 1910 |
| NLB/42/333 | Copy letter from Robert William Frederick Harrison to Dr Charles Chree FRS, Old Deer Park, Richmond, Surrey | 24 May 1910 |
| NLB/42/468 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 16 June 1910 |
| NLB/42/389 | Copy letter from Robert William Frederick Harrison to Dr [Charles] Chree FRS, Old Deer Park, Richmond, Surrey | 2 June 1910 |
| NLB/42/279 | Copy letter from Joseph Larmor, Sec Rs [Secretary of the Royal Society] to The Director, National Physical Laboratory | 4 May 1910 |
| NLB/44/124 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 10 May 1911 |
| NLB/42/799 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS, Kew Observatory | 13 October 1910 |
| NLB/42/536 | Copy letter from Robert William Frederick Harrison to Dr Charles Chree FRS, Old Deer Park, Richmond, Surrey | 30 June 1910 |
| NLB/42/549 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 4 July 1910 |
| NLB/43/11 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 21 October 1910 |
| NLB/43/145 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, Kew Observatory, Richmond | 10 November 1910 |
| NLB/42/771 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 5 October 1910 |
| NLB/43/89 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 4 November 1910 |
| NLB/43/22 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 24 October 1910 |
| NLB/43/123 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 8 November 1910 |
| NLB/44/105 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 5 May 1911 |
| NLB/44/25 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 25 April 1911 |
| NLB/44/207 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 25 May 1911 |
| NLB/43/179 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 14 November 1910 |
| NLB/43/215 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 22 November 1910 |
| NLB/44/307 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 13 June 1911 |
| NLB/43/428 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 10 January 1911 |
| NLB/43/583 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 15 February 1911 |
| NLB/44/660 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 10 October 1911 |
| NLB/45/369 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 23 February 1912 |
| NLB/43/725 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 20 March 1911 |
| NLB/43/435 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 14 January 1911 |
| NLB/43/710 | Copy letter from Joseph Larmor, to Dr Charles Chree, Fellow of the Royal Society | 14 March 1911 |
| NLB/45/194 | Copy letter from Robert William Frederick Harrison to Dr Charles Chree FRS | 17 January 1912 |
| NLB/46/20 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 23 May 1912 |
| NLB/46/73 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 6 June 1912 |
| NLB/48/579 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society | 29 July 1913 |
| NLB/45/738 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 1 May 1912 |
| NLB/45/655 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree | 20 April 1912 |
| NLB/47/513 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 13 February 1913 |
| NLB/48/108 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 19 May 1913 |
| NLB/46/675 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 15 October 1912 |
| NLB/10 | New Letter Book volume 10, copy letters sent from Royal Society administration | 17 August 1894-1 April 1895 |
| NLB/46/683 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, Kew Observatory, Richmond | 15 October 1912 |
| NLB/46/786 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 4 November 1912 |
| NLB/47/544 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 19 February 1913 |
| NLB/47/635 | Copy letter from Robert William Frederick Harrison to Dr [Charles] Chree | 6 March 1913 |
| NLB/48/89 | Copy letter from Robert William Frederick Harrison, Dr Charles Chree, Fellow of the Royal Society | 9 May 1913 |
| NLB/48/343 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 16 June 1913 |
| NLB/47/38 | Copy letter from Robert William Frederick Harrison to Dr [Charles] Chree | 19 November 1912 |
| NLB/50/494 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 17 July 1914 |
| NLB/48/355 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 20 June 1913 |
| NLB/48/557 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 25 July 1913 |
| NLB/48/278 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 10 June 1913 |
| NLB/48/482 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 11 July 1913 |
| NLB/50/68 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 24 April 1914 |
| NLB/48/758 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 8 October 1913 |
| NLB/48/803 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society | 15 October 1913 |
| NLB/48/787 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 14 October 1913 |
| NLB/50/355 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society | 23 June 1914 |
| NLB/50/793 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 7 November 1914 |
| NLB/50/513 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 23 July 1914 |
| NLB/50/566 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 29 July 1914 |
| NLB/50/779 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 5 November 1914 |
| NLB/50/184 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 19 May 1914 |
| NLB/55/412 | Copy letter from [Dr.] Arthur Schuster, Secretary of the Royal Society and FRS; toDr. [Charles] Chree, FRS | 22 March 1918 |
| NLB/50/543 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 27 July 1914 |
| NLB/52/287 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Charles Chree, FRS | 2 November 1915 |
| NLB/51/734 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Dr Charles Chree FRS | 11 June 1915 |
| NLB/52/269 | Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to Dr. Charles Chree, FRS | 29 October 1915 |
| RR/21/57 | Referee's report by Arthur Schuster, on a paper 'Atmospheric electricity potential gradient at Kew Observatory, 1898 to 1912' by Charles Chree | [December 1914] |
| NLB/52/586 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Charles Chree, FRS | 25 January 1916 |
| RR/27/27 | Referee's report by Arthur Schuster, on a paper 'The 27-day period (interval) in terrestrial magnetism' by Charles Chree | April 1922 |
| 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 |
| RR/22/50 | Referee's report by Charles Chree, on a paper 'A magnetic survey of the dominion of New Zealand' by Clinton Coleridge Farr | October 1915 |
| NLB/54/222 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 8 March 1917 |
| RR/21/114 | Referee's report by Charles Chree, on a paper 'On the circulation of the atmosphere' by Henry Reginald Arnulph Mallock | [January 1915] |
| RR/22/100 | Referee's report by Charles Chree, on a paper 'The newtonian constant of gravitation as affected by temperature' by P E Shaw | 9 November 1915 |
| RR/22/38 | Referee's report by Arthur Schuster, on a paper 'Discussion of Kew magnetic data, especially the diurnal inequalities of horizontal force and vertical force, from ordinary days of the eleven years 1890 to 1900' by Charles Chree | 1915 |
| RR/17/262 | Referee's report by Charles Chree, on a paper 'Results of magnetic observations at stations on the coasts of the British Isles 1907' by L Chetwynd | August 1908 |
| NLB/54/362 | Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to Dr. [Charles] Chree, FRS | 24 April 1917 |
| RR/16/157 | Letter from Charles Chree, to Joseph Larmor, concerning referee reports on a paper 'An enquiry into the nature of the relationship between sunspot frequency and terrestrial magnetism' by Charles Chree | 30 March 1904 |
| RR/21/56 | Referee's report by Charles Thomson Rees Wilson, on a paper 'Atmospheric electricity potential gradient at Kew Observatory, 1898 to 1912' by Charles Chree | [December 1914] |
| NLB/56/22 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 5 November 1918 |
| NLB/54/439 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Chalres] Chree, FRS | 16 May 1917 |
| RR/22/37 | Referee's report by Frank Watson Dyson, on a paper 'Discussion of Kew magnetic data, especially the diurnal inequalities of horizontal force and vertical force, from ordinary days of the eleven years 1890 to 1900' by Charles Chree | November 1915 |
| NLB/43 | New Letter Book volume 43, copy letters sent from Royal Society administration | 20 October 1910-12 April 1911 |
| RR/33/38 | Referee's report by George Clarke Simpson, on a paper 'Atmospheric ozone and terrestrial magnetism' by Charles Chree | 16 January 1926 |
| NLB/54/681 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 30 July 1917 |
| NLB/54/677 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir [James Hopwood] Jeans, Chairman of the Mathematics Committee and FRS | 26 July 1917 |
| NLB/53/248 | Copy letter from [Robert William Frederick Harrison], Assistant Secretary of the Royal Society; to Dr. Charles Chree, FRS | 09 June 1916 |
| NLB/55/67 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 22 November 1917 |
| NLB/53/228 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Charles Chree, FRS | 03 June 1916 |
| NLB/63/626 | Copy letter from John [Millar] Thomson, Chairman of the Library Committee and FRS; to Dr. [Charles] Chree, FRS | 18 November 1922 |
| RR/35/39 | Referee's report by Sydney Chapman, on a paper 'Recurrence phenomena in terrestrial magnetism' by Charles Chree and J M Stagg | May 1927 |
| RR/10/25 | Referee's report by William Grylls Adams, on a paper 'Conduction of heat in liquids' by Charles Chree | 28 April 1887 |
| NLB/53/594 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr Charles Chree, FRS | 06 November 1916 |
| NLB/57/302 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr C [Charles] Chree, FRS | 10 October 1919 |
| RR/10/137 | Letter from Edward John Routh, to John William Strutt, Lord Rayleigh, regarding a paper 'On Aeolotropic elastic solids' by Charles Chree | 15 October 1888 |
| NLB/56/907 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 25 June 1919 |
| RR/10/138 | Letter from Alfred George Greenhill, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'On Aeolotropic elastic solids' by Charles Chree | 3 November 1888 |
| NLB/58/886 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 29 June 1920 |
| RR/12/72 | Third letter from Charles Chree, on his paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' to The Royal Society | 12 February 1895 |
| NLB/58/928 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 5 July 1920 |
| NLB/70/520 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 26 April 1927 |
| 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/18/22 | Referee's report by William Mitchinson Hicks, on a paper 'Some phenomena of magnetic disturbances at Kew' by Charles Chree | March 1910 |
| 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/14/23 | Referee's report by Frederick John Jervis-Smith, on a paper 'Experiments on aneroid barometers at Kew observatory, and their discussion' by Charles Chree | nd [1898] |
| RR/14/156 | Detailed referee's report by Charles Chree, on a paper 'On the resistance to torsion of certain forms of shafting, with special reference to the effect of keyways' by Louis Napoleon George Filon | nd [1899] |
| RR/14/131 | Referee's report by Hugh Longbourne Callendar, on a paper 'Investigations on platinum thermometry at Kew Observatory' by Charles Chree | nd [January 1900] |
| RR/18/122 | Referee's report by Charles Chree, on a paper 'The vertical temperature distribution the atmosphere over England, and some remarks on the general and local circulation' by William Henry Dines | March 1911 |
| RR/14/155 | Referee's report by Charles Chree, on a paper 'On the resistance to torsion of certain forms of shafting, with special reference to the effect of keyways' by Louis Napoleon George Filon | nd [July 1899] |
| RR/15/26 | Referee's report by George Hartley Bryan, on a paper 'Elastic solids at rest or in motion in a liquid' by Charles Chree | February 1901 |
| NLB/60/141 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 14 December 1920 |
| RR/21/52 | Referee's report by Arthur Schuster, on a paper 'The 27-day period in magnetic phenomena' by Charles Chree | [June 1914] |
| NLB/60/252 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 7 January 1921 |
| RR/14/127 | Referee's report by Richard Tetley Glazebrook, on a paper 'Collimator magnets and the determination of the Earth’s horizontal magnetic force' by Charles Chree | nd [June 1899] |
| RR/14/22 | Letter from Frederick John Jervis-Smith, to Richard Tetley Glazebrook, regarding a paper 'Experiments on aneroid barometers at Kew observatory, and their discussion' by Charles Chree | 3 May 1898 |
| RR/19/26 | Referee's report by Ralph Allen Sampson, on a paper 'Some phenomena of sunspots and of terrestrial magnetism at Kew Observatory' by Charles Chree | [April 1912] |
| RR/20/131 | Referee's report by Charles Chree, on a paper 'On the general theory of elastic stability' by Richard Vynne Southwell | March 1913 |
| RR/18/21 | Referee's report by Arthur Schuster, on a paper 'Some phenomena of magnetic disturbances at Kew' by Charles Chree | February 1910 |
| NLB/64/694 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Dr [Charles] Chree FRS | 4 June 1923 |
| NLB/61/163 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr. [Charles] Chree, FRS; 75 Church Road, Richmond, Surrey | 26 May 1921 |
| NLB/57/93 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the High Commissioner for New Zealand, 415 Strand, WC2 | 17 July 1919 |
| NLB/57/430 | Copy letter from Sir Arthur Schuster, FRS, Secretary of the Royal Society; to Dr Charles Chree, FRS | 6 November 1919 |
| NLB/57/666 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr C [Charles] Chree, FRS | 8 January 1920 |
| NLB/61/488 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 11 July 1921 |
| NLB/61/316 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 18 June 1921 |
| NLB/61/361 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 23 June 1921 |
| NLB/57/338 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 21 October 1919 |
| NLB/57/506 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr C [Charles] Chree, FRS | 20 November 1919 |
| NLB/57/765 | Copy letter from Sir James Hopwood Jeans, FRS, Secretary of the Royal Society; to Dr Charles Chree, FRS | 2 February 1920 |
| NLB/57/530 | Copy letter from Sir Arthur Schuster, Secretary of the Royal Society; to Dr C [Charles] Chree, FRS | 26 November 1919 |
| NLB/57/766 | Copy letter from Sir James Hopwood Jeans, FRS, Secretary of the Royal Society; to Dr A Russell; 1 Richmond Bridge Mansions, East Twickenham | 2 February 1920 |
| NLB/66/126 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. Ch. Maurain, Institut de Physique du Globe, Paris | 26 February 1924 |
| NLB/57/8 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs. W B Keen & Co. | 1 July 1919 |
| NLB/66/81 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Charles] Chree, FRS | 19 February 1924 |
| NLB/57/38 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr C [Charles]Chree, FRS | 8 July 1919 |
| NLB/57/307 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr C [Charles] Chree, FRS | 13 October 1919 |
| NLB/57/310 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr Charles Chree, FRS | 13 October 1919 |
| NLB/57/244 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Frank [Watson] Dyson, FRS, Chairman of the Mathematics Committee | 26 September 1919 |
| NLB/57/431 | Copy letter from Sir Arthur Schuster, Secretary of the Royal Society; to the Keeper HM [His Majesty's] Privy Purse [Frederick Edward Grey Ponsonby, 1st Baron Sysonby, GCB, GCVO, PC] | 6 November 1919 |
| NLB/57/734 | Copy letter from Sir James Hopwood Jeans, FRS, Secretary of the Royal Society; to Dr Charles Chree, FRS | 30 January 1920 |
| NLB/65/50 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 18 July 1923 |
| NLB/67/142 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Colonel [Henry George] Lyons, FRS | 1 November 1924 |
| NLB/64/625 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 16 May 1923 |
| NLB/71/830 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [George Clarke] Simpson, C.B., C.B.E., FRS | 12 November 1928 |
| NLB/66/74 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Charles] Chree, FRS | 18 February 1924 |
| NLB/66/11 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Charles] Chree, FRS | 6 February 1924 |
| NLB/67/452 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 22 December 1924 |
| NLB/65/795 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 4 January 1924 |
| NLB/66/283 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh, FRS | 2 April 1924 |
| NLB/68/167 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 22 May 1925 |
| NLB/67/764 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 2 March 1925 |
| NLB/68/300 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 15 June 1925 |
| NLB/68/209 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 28 May 1925 |
| NLB/68/254 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 5 June 1925 |
| NLB/68/506 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Colonel [Henry George] Lyons, FRS, Chairman of the National Committee for Geodesy and Geophysics | 20 July 1925 |
| NLB/66/884 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Colonel [Henry George] Lyons, FRS | 6 August 1924 |
| NLB/68/507 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 20 July 1925 |
| NLB/68/505 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 20 July 1925 |
| NLB/71/52 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 14 December 1927 |
| NLB/70/182 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 25 January 1927 |
| NLB/69/549 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Charles] Chree, FRS | 4 June 1926 |
| NLB/69/819 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society;to Dr. [Charles] Chree, FRS | 26 October 1926 |
| NLB/70/727 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 13 July 1927 |
| NLB/70/943 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Charles] Chree, FRS | 14 November 1927 |
| CD/39 | Correspondence on Dr Charles Chree's Pension, for the consideration of Council of the Royal Society | 1921-1925 |
| NLB/11 | New Letter Book volume 11, copy letters sent from Royal Society administration | 2 April 1895-15 November 1895 |
| IM/Maull/000842 | Chree, Charles | nd |
| MC/18 | Volume 18 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1903 |
| NLB/9/153 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 6 April 1894 |
| NLB/9/59 | Copy letter from Herbert Rix, to Charles Chree, Kew Observatory, Richmond, Surrey | 20 March 1894 |
| NLB/34 | New Letter Book volume 34, copy letters sent from Royal Society administration | 14 November 1906-25 March 1907 |
| NLB/13/321 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Kew Observatory, Richmond, Surrey | 21 July 1896 |
| NLB/12/825 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society and Chairman of the Physics and Chemistry Committee | 13 May 1896 |
| NLB/42 | New Letter Book volume 42, copy letters sent from Royal Society administration | 4 March 1910-19 October 1910 |
| RR/15/383 | Letter from Arthur Schuster, on his paper 'Some definite integrals and a new method of reducing a function of spherical coordinates to a series of spherical harmonics' to Joseph Larmor | 4 August 1902 |
| RR/16/391 | Referee's report by Charles Chree, on a paper 'Atmosphere electricity in high latitudes' by George Clarke Simpson | March 1905 |
| RR/16/220 | Referee's report by Charles Chree, on a paper 'The seismic effect of tidal stresses' by Richard Dixon Oldham | 6 June 1904 |
| RR/16/217 | Memoranda from Robert William Frederick Harrison, and reply from Hugh Longbourne Callendar and Joseph Larmor, on a paper 'On the seismic effect of tidal stresses' by Richard Dixon Oldham | 10 May 1904 |
| RR/16/341 | Referee's report by Charles Chree, on a paper 'The flow of the River Thames in relation to British pressure & rainfall changes' by Joseph Norman Lockyer and W J S Lockyer | 19 May 1905 |
| 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/19/251 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 19 July 1899 |
| NLB/20/334 | Copy letter from Arthur William Rucker, to Professor George Carey Foster, Fellow of the Royal Society | 26 March 1900 |
| NLB/22/3 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 8 February 1901 |
| NLB/22/360 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society | 1 May 1901 |
| NLB/24/744 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, [Fellow of the Royal Society] | 2 July 1902 |
| NLB/28/143 | Copy letter from Robert William Frederick Harrison, to Professor Joseph Larmor, Secretary of the Royal Society | 18 January 1904 |
| NLB/29/409 | Copy letter from Joseph Larmor and Archibald Geikie, to Captain Thomas Henry Tizard, Fellow of the Royal Society, Charles Thomas Rees Wilson, William Henry Dines, Fellow of the Royal Society, H N Dickson, A J Herbertson, Dr Charles Chree, Fellow of the Royal Society, Professor Joseph Larmor, Secretary of the Royal Society, Dr William Napier Shaw, Fellow of the Royal Society, Dr H R Mill | 10 October 1904 |
| NLB/29/504 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society, Old Deer Park, Richmond, Surrey | 27 October 1904 |
| NLB/34/6 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 16 November 1906 |
| NLB/36/205 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 16 September 1907 |
| NLB/37/394 | Copy letter from Archibald Geikie to Dr [Charles] Chree | 12 March 1908 |
| NLB/44/230 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 29 May 1911 |
| NLB/47/729 | Copy letter from Robert William Frederick Harrison to Dr Charles Chree FRS | 2 April 1913 |
| NLB/47/550 | Copy letter from Robert William Frederick Harrison to Dr C [Charles] Chree FRS | 21 February 1913 |
| NLB/48/819 | Copy letter from Robert William Frederick Harrison, to Dr [Charles] Chree, Fellow of the Royal Society | 17 October 1913 |
| RR/18/84 | Referee's report by Charles Chree, on a paper 'A determination of the ratio of mass to weight for a radioactive substance' by L Southerns | July 1910 |
| RR/17/91 | Referee's report by Charles Chree, on a paper 'On the periodicities of sunspots' by Arthur Schuster | [February 1906] |
| RR/20/23 | Referee's report by Herbert Hall Turner, on a paper 'Some phenomena of sunspots and of terrestrial magnetism - Part II' by Charles Chree | June 1913 |
| RR/21/4 | Referee's report by Charles Chree, on a paper 'The flow in metals under large constant stresses' by Edward Neville Da Costa Andrade | 26 March 1914 |
| NLB/56 | New Letter Book volume 56, copy letters sent from Royal Society administration | 1 November 1918-27 June 1919 |
| RR/10/136 | Referee's report by William Thomson, Lord Kelvin, on a paper 'On Aeolotropic elastic solids' by Charles Chree | 16 August 1888 |
| RR/10/135 | Referee's report by George Howard Darwin, on a paper 'On Aeolotropic elastic solids' by Charles Chree | 1 August 1888 |
| NLB/48 | New Letter Book volume 48, copy letters sent from Royal Society administration | 25 April 1913-25 October 1913 |
| NLB/57/437 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr C [Charles] Chree, FRS | 7 November 1919 |
| RR/10/140 | Second referee's report by Edward John Routh, on a paper 'On Aeolotropic elastic solids' by Charles Chree | 22 December 1888 |
| NLB/57/433 | Copy letter from Sir Arthur Schuster, Secretary of the Royal Society; to the Deputy Master of the Mint | [November 1919] |
| RR/16/154 | Referee's report by Frank Watson Dyson, on a paper 'An enquiry into the nature of the relationship between sunspot frequency and terrestrial magnetism' by Charles Chree | March 1904 |
| NLB/12/897 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 23 May 1896 |
| RR/16/35 | Referee's report by William Ellis, on a paper 'An analysis of the results from the Kew Magnetographs on quiet days during the eleven years 1890-1900 etc.' by Charles Chree | 1 June 1903 |
| RR/16/155 | Referee's report by Arthur Schuster, on a paper 'An enquiry into the nature of the relationship between sunspot frequency and terrestrial magnetism' by Charles Chree | March 1904 |
| NLB/19/615 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 9 November 1899 |
| NLB/20/93 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow for the Royal Society | 30 January 1900 |
| NLB/30/41 | Copy letter from Joseph Larmor, to Dr Charles Chree, [Fellow of the Royal Society] | 20 January 1905 |
| NLB/30/801 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, [Fellow of the Royal Society] | 25 May 1905 |
| NLB/32/683 | Copy letter from Professor Joseph Larmor, to Dr Charles Chree, [Fellow of the Royal Society] | 4 May 1906 |
| NLB/38/371 | Copy letter from Archibald Geikie, to Dr Charles Chree, Fellow of the Royal Society | 22 July 1908 |
| NLB/46/392 | Copy letter from Robert William Frederick Harrison, to Dr Charles Chree, Fellow of the Royal Society | 24 July 1912 |
| RR/10/134 | Referee's report by Alfred George Greenhill, on a paper 'On Aeolotropic elastic solids' by Charles Chree | 30 July 1888 |
| NLB/58 | New Letter Book volume 58, copy letters sent from Royal Society administration | 28 February 1920-9 July 1920 |
| NLB/60 | New Letter Book volume 60, copy letters sent from Royal Society administration | 2 December 1920-26 April 1921 |
| IM/000844 | Foster, George Carey | 2001 |
| NLB/52 | New Letter Book volume 52, copy letters sent from Royal Society administration | 9 July 1915-8 March 1916 |
| NLB/57 | New Letter Book volume 57, copy letters sent from Royal Society administration | 27 June 1919-27 February 1920 |
| RR/10/252 | Referee's report by William Grylls Adams, on a paper 'On the effects of pressure on the magnetisation of cobalt' by Charles Chree | 15 February 1890 |
| RR/10/26 | Referee's report by Arthur Schuster, on a paper 'Conduction of heat in liquids' by Charles Chree | [1887] |
| RR/14/128 | Detailed referee's report by Richard Tetley Glazebrook, on a paper 'Collimator magnets and the determination of the Earth’s horizontal magnetic force' by Charles Chree | 16 June 1899 |
| RR/15/382 | Referee's report by Charles Chree, on a paper 'Some definite integrals and a new method of reducing a function of spherical coordinates to a series of spherical harmonics' by Arthur Schuster | 17 July 1902 |
| RR/16/216 | Referee's report by George Howard Darwin, on a paper 'The seismic effect of tidal stresses' by Richard Dixon Oldham | 7 May 1904 |
| RR/28/83 | Referee's report by Charles Thomson Rees Wilson, on a paper 'Atmospheric pollution and potential gradient at Kew observatory, 1921 and 1922' by Charles Chree | [January 1924] |
| RR/28/82 | Referee's report by Sydney Chapman, on a paper 'Magnetic phenomena in the region of the south magnetic pole' by Charles Chree | 4 June 1923 |
| CD/99/4 | Letter from Charles Chree, Meteorological Office, Central Observatory, Kew Observatory, Richmond, Surrey, to Joseph Larmor | 8 May 1911 |
| CD/99/13 | Notes on processing magnetical data [from the Australasian Antarctice Expedition], by Charles Chree | 10 July 1916 |
| CD/99/12 | Letter from Charles Chree, 75 Church Street, Richmond, Surrey, to Arthur Schuster | 10 July 1916 |
| AP/65/2 | Unpublished paper, 'On aeolotropic [anisotropic] elastic solids' by C [Charles] Chree | 1888 |
| RR/13/17 | Referee's report by Arthur Schuster, on a paper 'Observations on atmospheric electricity at the Kew Observatory' by Charles Chree | 10 June 1896 |
| RR/12/70 | Second letter from Ernest William Hobson, regarding a paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' by Charles Chree | 16 January 1895 |
| RR/14/24 | Referee's report by Arthur Schuster, on a paper 'Experiments on aneroid barometers at Kew observatory, and their discussion' by Charles Chree | nd [1898] |
| RR/16/36 | Referee's report by Richard Tetley Glazebrook, on a paper 'An analysis of the results from the Kew Magnetographs on quiet days during the eleven years 1890-1900 etc.' by Charles Chree | 10 June 1903 |
| PP/11/2 | Paper, 'Conduction of heat in liquids' by C [Charles] Chree | 1887 |
| RR/14/133 | Referee's report by Charles Vernon Boys, on a paper 'Investigations on platinum thermometry at Kew Observatory' by Charles Chree | nd [January 1900] |
| RR/15/25 | Referee's report by Augustus Edward Hough Love, on a paper 'Elastic solids at rest or in motion in a liquid' by Charles Chree | 26 November 1900 |
| RR/16/34 | Referee's report by Arthur Schuster, on a paper 'An Analysis of the Results from the Kew Magnetographs on Quiet Days during the Eleven Years 1890-1900 etc.' by Charles Chree | May 1903 |
| RR/10/139 | Letter from William Thomson, Lord Kelvin, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'On Aeolotropic elastic solids' by Charles Chree | 8 November 1888 |
| RR/10/141 | Referee's report by Edward John Routh, on a paper 'On Aeolotropic elastic solids' by Charles Chree | 24 January 1889 |
| RR/12/65 | Referee's report by Charles Niven, on a paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' by Charles Chree | 10 May 1894 |
| RR/12/66 | Referee's report by Ernest William Hobson, on a paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' by Charles Chree | 7 November 1894 |
| RR/12/67 | Detailed referee's report by Ernest William Hobson, on a paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' by Charles Chree | nd [1894] |
| RR/12/68 | Letter from Charles Chree, on his paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' to The Royal Society | 15 December 1894 |
| RR/12/69 | Letter from Ernest William Hobson, regarding a paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' by Charles Chree | 1 January 1895 |
| RR/12/71 | Second letter from Charles Chree, on his paper 'The stresses and strains in isotropic elastic solid ellipsoids in equilibrium under bodily forces derivable from a potential of the second degree' to The Royal Society | 21 January 1895 |
| RR/14/130 | Referee's report by George Carey Foster, on a paper 'Investigations on platinum thermometry at Kew Observatory' by Charles Chree | nd [January 1900] |
| RR/14/132 | Detailed referee's report by Hugh Longbourne Callendar, on a paper 'Investigations on platinum thermometry at Kew Observatory' by Charles Chree | nd [1900] |
| RR/14/134 | Letter from Charles Chree, regarding a paper 'Investigations on platinum thermometry at Kew Observatory' by Charles Chree | 12 March 1900 |
| RR/15/105 | Referee's report by Charles Chree, on a paper 'Underground temperature at Oxford in the year 1899 as determined by five platinum resistance thermometers' by Arthur Alcock Rambaut | 19 June 1900 |
| RR/15/214 | Referee's report by Charles Chree, on a paper 'Magnetic observations in Egypt, 1893-1901' by Henry George Lyons | 18 June 1901 |
| RR/16/76 | Referee's report by Charles Chree, on a paper 'The propagation of tremor over the surface of an elastic solid' by Horace Lamb | July 1903 |
| RR/16/92 | Referee's report by Charles Chree, on a paper 'Some experiments in magnetism' by T C Porter | November 1903 |
| RR/16/158 | Referee's report by Frank Watson Dyson, on a paper 'An analysis on the results from the Falmouth Magnetographs on "quiet" days during the twelve years 1891 to 1902' by Charles Chree | December 1904 |
| RR/17/145 | Referee's report by Frank Watson Dyson, on a paper 'Magnetic declination at Kew Observatory, 1890 to 1900' by Charles Chree | [November 1907] |
| RR/17/214 | Referee's report by Charles Chree, on a paper 'The diurnal variation of terrestrial magnetism' by Arthur Schuster | [December 1907] |
| RR/20/132 | Referee's report by Charles Chree, on a paper 'On the critical speeds of a rotating shaft' by Richard Vynne Southwell | 13 April 1913 |
| RR/28/80 | Referee's report by Arthur Schuster, on a paper 'Magnetic phenomena in the region of the south magnetic pole' by Charles Chree | [May 1923] |
| RR/28/81 | Referee's report by George Clarke Simpson, on a paper 'Magnetic phenomena in the region of the south magnetic pole' by Charles Chree | 25 May 1923 |
| RR/33/37 | Referee's report by George Clarke Simpson, on a paper 'A comparison of the records from British magnetic stations underground and surface' by Charles Chree and R E Watson | 23 June 1926 |
| RR/16/299 | Referee's report by Charles Chree, on a paper 'The vertical temperature gradient on the west coast of Scotland and at Oxshott, Surrey' by William Henry Dines | December 1905 |
| NLB/26/184 | Copy letter from Robert William Frederick Harrison to, Dr [Charles] Chree, Fellow of the Royal Society, Richmond | 4 February 1903 |
| MC/18/27 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison | 6 February 1903 |
| MC/18/28 | Letter from Charles Chree, The National Physical Laboratory, Old Deer Park, Richmond, Surrey, to [Robert William Frederick] Harrison | 16 March 1903 |
| MC/18/29 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison, Assistant Secretary of the Royal Society | 1 May 1903 |
| MC/19/189 | Letter from [Charles] Chree, 25 Mount Ararat Road, Richmond, Surrey, to [Robert William Frederick] Harrison | 12 March 1904 |
| MC/19/190 | Letter from [Charles] Chree, 25 Mount Ararat Road, Richmond, Surrey, to Robert [William Frederick] Harrison | 7 June 1904 |
| MC/19/191 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison, Assistant Secretary of the Royal Society | 27 July 1904 |
| MC/19/192 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison, Assistant Secretary of the Royal Society | 28 October 1904 |
| MC/19/194 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison | 1 November 1904 |
| MC/19/196 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison | 16 December 1904 |
| MC/19/195 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison, Assistant Secretary of the Royal Society | 12 December 1904 |
| NLB/38/688 | Copy letter from Joseph Larmor and Archibald Geikie, to Sir Arthur William Rucker, Fellow of the Royal Society | 22 October 1908 |
| MC/20 | Volume 20 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1905 |
| MC/17 | Volume 17 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1897-1899 |
| MC/20/18 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Joseph] Larmor | 12 July 1905 |
| MC/20/14 | Letter from Charles Chree, Secretary of the Antarctic Magnetic Reductions Committee, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to Messrs Harrison & Sons | 11 January 1905 |
| MC/20/15 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Joseph] Larmor | 16 January 1905 |
| MC/20/16 | Letter from [Charles] Chree, 25 Mount Ararat Road, Richmond, Surrey, to [Robert William Frederick] Harrison | 6 February 1905 |
| MC/20/17 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Robert William Frederick] Harrison, Assistant Secretary of the Royal Society | 18 February 1905 |
| MC/20/19 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to Sir Archibald Geikie | 21 July 1905 |
| MC/20/20 | Letter from Charles Chree, The National Physical Laboratory (Kew Observatory Department), Richmond, Surrey, to [Joseph] Larmor | 16 November 1905 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |