| Reference number | Title | Date |
| EC/1878/18 | Symons, George James: certificate of election to the Royal Society | |
| NLB/15/240 | Copy letter from Robert William Frederick Harrison, to George James Symons, Fellow of the Royal Society | 22 July 1897 |
| NLB/2/757 | Copy letter from Herbert Rix, to George James Symons | 29 October 1888 |
| NLB/1/480 | Copy letter from Herbert Rix, to George James Symons, Fellow of the Royal Society | 28 June 1887 |
| NLB/4/212 | Copy letter from Herbert Rix, to Mr George James Symons, Fellow of the Royal Society | 13 March 1890 |
| NLB/4/605 | Copy letter from Herbert Rix, to George James Symons, Fellow of the Royal Society | 21 July 1890 |
| NLB/4/672 | Copy letter from Herbert Rix, to George James Symons | 18 September 1890 |
| NLB/4/503 | Copy letter from Michael Foster, to George James Symons, Fellow of the Royal Society | 19 June 1890 |
| NLB/3/857 | Copy letter from Herbert Rix, to George James Symons, Fellow of the Royal Society | 28 October 1889 |
| NLB/3/829 | Copy letter from Herbert Rix, to George James Symons, Fellow of the Royal Society | 18 October 1889 |
| NLB/5/1157 | Copy letter from Herbert Rix, to George James Symons, Fellow of the Royal Society | 16 January 1892 |
| NLB/5/1071 | Copy letter from Herbert Rix, to George James Symons, [Fellow of the Royal Society] | 31 December 1891 |
| NLB/10/817 | Copy letter from Herbert Rix, to Mr Thomas Matheson, Oldgate Street, Morpeth | 11 February 1895 |
| NLB/12/210 | Copy letter from Herbert Rix, to George James Symons, Fellow of the Royal Society | 6 January 1896 |
| NLB/2/546 | Copy letter from Theodore E James, to Professor George James Symons, Fellow of the Royal Society | 10 August 1888 |
| NLB/14/857 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 28 May 1897 |
| NLB/15/773 | Copy letter from Robert William Frederick Harrison, to George James Symons, Fellow of the Royal Society | 6 December 1897 |
| NLB/16/47 | Copy letter from Michael Foster, to G J Symons, Fellow of the Royal Society | 21 January [1898] |
| NLB/19/264 | Copy letter from Robert William Harrison, to George James Symons, Fellow of the Royal Society | 21 July 1899 |
| NLB/20/284 | Copy letter from Theodore E James, to Messrs Harrison & Sons | 13 March 1900 |
| NLB/20/698 | Copy letter from Robert William Frederick Harrison, to George Washington Moon, 131 Bedford Court Mansions, Bedford Square, W.C. | 19 June 1900 |
| MS/427/419 | Copy letter from [George Gabriel] Stokes, Secretary of the Royal Society; to the Secretary of the Treasury | 16 April 1885 |
| MS/427/431 | Copy letter from [Michael] Foster, Secretary of the Royal Society; to the Assistant Financial Secretary, Treasury | 26 May 1885 |
| NLB/2/489 | Copy letter from Herbert Rix, to Mr George James Symons | 18 July 1888 |
| NLB/8/667 | Copy letter from Herbert Rix, to George James Symons, Fellow of the Royal Society | 5 December 1893 |
| NLB/12/877 | Copy letter from Robert William Frederick Harrison, to George James Symons, Fellow of the Royal Society | 22 May 1896 |
| NLB/15/218 | Copy letter from Robert William Frederick Harrison, to George James Symons, Fellow of the Royal Society | 17 July 1887 |
| RR/14/233 | Referee's report by George James Symons, on a paper 'The diurnal range of rain at the seven observatories in connection with the Meteorological Office, 1871-1890' by Robert Henry Scott | 11 May 1899 |
| RR/10/122 | Referee's report by George James Symons, on a paper 'On the relations of the diurnal barometric maxima to certain critical conditions of temperature, cloud, and rainfall' by Henry Francis Blanford | 5 May 1888 |
| MS/516/6/9 | Letter from James Beazley, the British Ship Owners Company, Liverpool (Limited) to [George James] Symons, [Chair of the Royal Society Krakatoa Committee] | 14 February 1884 |
| 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 |
| MC/11/221 | Letter from G J [George James] Symons, 62 Camden Square, London, to Professor [George Gabriel] Stokes, Secretary of the Royal Society | 11 June 1878 |
| MC/11/362 | Letter from G J [George James] Symons, Secretary of the Meteorological Society, 30 Great George Street, Westminster, to [Thomas Henry Huxley and George Gabriel Stokes], Secretaries of the Royal Society | 19 May 1879 |
| MC/11/432 | Letter from G J [George James] Symons, Secretary of the Meteorological Society, 30 Great George Street, Westminster, to Walter White, [Assistant Secretary of the Royal Society] | 4 November 1879 |
| MC/11 | Volume 11 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1877-1879 |
| PP/3/29 | Paper, 'Note on the establishment and first results of simultaneous thermometric and hygrometric observations at heights of 4 and 170 feet, and of Siemens’ electrical thermometer at 260 feet above the ground' by G J [George James] Symons | 1883 |
| PP/3/29/1 | Manuscript, 'Note on the establishment and first results of simultaneous thermometric and hygrometric observations at heights of 4 and 170 feet, and of Siemens’ electrical thermometer at 260 feet above the ground' by G J [George James] Symons | 1883 |
| PP/3/29/2 | Diagram, 'relative situations of the three sets of thermometers' by G J [George James] Symons | 1883 |
| PP/11/12 | Paper, 'On the detonating bolide of November 20th, 1887' by George James Symons | 1887 |
| PP/11/12/1 | Manuscript, 'On the detonating bolide of November 20th, 1887' by George James Symons | 1887 |
| PP/11/12/2 | Map, locations affected by the detonating bolide by George James Symons | 1887 |
| PP/16/4/1 | Manuscript, 'On barometric oscillations during thunderstorms, and on the brontometer, an instrument designed to facilitate their study' by George James Symons | 1890 |
| PP/16/4 | Paper, 'On barometric oscillations during thunderstorms, and on the brontometer, an instrument designed to facilitate their study' by George James Symons | 1890 |
| PP/16/4/2 | Diagrams, barograms by George James Symons | 1890 |
| MC/14/229 | Letter from [George James] Symons, 62 Camden Square, London, to the Secretaries of the Royal Society | 15 June 1887 |
| MC/15/87 | Letter from [George James] Symons, 62 Camden Square, to the Secretaries of the Royal Society | 26 June 1890 |
| MS/516/6/10 | Letter from S. Waymouth, Orient Steam Navigation Company Limited, Fenchurch Avenue, London, to [George James] Symons, [Chair of the Royal Society Krakatoa Committee] | 14 February 1884 |
| MC/15/83 | Letter from [George James] Symons, 62 Camden Square, London, to the Secretaries of the Royal Society | 12 June 1890 |
| MC/14/130 | Letter from [George James] Symons, 62 Camden Square, to Secretaries of the Royal Society | 19 May 1886 |
| MC/14 | Volume 14 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1885-1888 |
| MC/15 | Volume 15 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1889-1892 |
| MS/516/6/15 | Memorandum from George Dowcra Junior, Perry Barr, Handsworth, Birmingham, to [George James] Symons, [Chair of the Royal Society Krakatoa Committee] | 26 February 1884 |
| MS/516/6/13 | Letter from L. Reid, Baroque Inc, SW India Docks, to [George James] Symons, [Chair of the Royal Society Krakatoa Committee] | 18 February 1884 |
| MS/516/6/14 | Letter from George Docwra Junior, Steam Flower Mills, Handsworth, Birmingham to [George James] Symons, [Chair of the Royal Society Krakatoa Committee] | 23 February 1884 |
| HS/17/256 | Letter, from George James Symons to Sir John Herschel, dated at 136 Camden Road | 13 June 1865 |