| RefNo | Title | Date |
| EC/1887/07 | Forbes; George: certificate of election to the Royal Society | |
| IM/Maull/001490 | Forbes, George | 1893 |
| NLB/3/54 | Copy letter from Herbert Rix, to Professor George Forbes, Fellow of the Royal Society | 23 February 1889 |
| NLB/5/975 | Copy letter from Herbert Rix, to Professor George Forbes, Fellow of the Royal Society, 34 Great George Street, S.W. | 27 November 1891 |
| NLB/8/654 | Copy letter from Herbert Rix, to Professor George Forbes, Fellow of the Royal Society | 5 December 1893 |
| RR/15/190 | Referee's report by Charles Vernon Boys, on a paper 'Description of a range-finder' by George Forbes | 4 July 1901 |
| RR/16/179 | Referee's report by Alfred George Greenhill, on a paper 'Exterior ballistics. 'Error of the day' and other corrections to naval range-tables' by George Forbes | 22 December 1904 |
| NLB/15/187 | Copy letter from Robert William Frederick Harrison, to Professor George Forbes, Fellow of the Royal Society | 12 July 1897 |
| NLB/35/49 | Copy letter from Robert William Frederick Harrison, to Professor George Forbes, Fellow of the Royal Society | 10 April 1907 |
| NLB/23/1/387 | Copy letter from Robert William Frederick Harrison, to George Forbes, Fellow of the Royal Society | 5 November 1901 |
| NLB/25/40 | Copy letter from Robert William Frederick Harrison, to Professor George Forbes, Fellow of the Royal Society, North Western Hotel, Liverpool | 29 July 1902 |
| NLB/24/535 | Copy letter from Joseph Larmor, to Professor [George] Forbes, Fellow of the Royal Society | May 1902 |
| NLB/34/34 | Copy letter from Theodore E James, to Richard Threlfall, Fellow of the Royal Society, George Forbes, Fellow of the Royal Society, Sydney John Hickson, Fellow of the Royal Society | 20 November 1906 |
| NLB/35/48 | Copy letter from Robert William Frederick Harrison, to C W S Crawley, 89 Upper Richmond Road, Putney, S.W. | 10 April 1907 |
| NLB/36/705 | Copy letter from Robert William Frederick Harrison, to Professor George Forbes, Fellow of the Royal Society, Uplands, Fareham, Hampshire | 4 December 1907 |
| NLB/36/770 | Copy letter from Joseph Larmor, to Professor George Forbes, [Fellow of the Royal Society] | 12 December 1907 |
| NLB/48/353 | Copy letter from Robert William Frederick Harrison, to Professor [George] Forbes, Fellow of the Royal Society, Kinnaird Cottage, Pitlochrie, N.B | 20 June 1913 |
| RR/8/357 | Referee's report by John William Strutt, Lord Rayleigh, on a paper 'Experimental determination of the velocity of white and of coloured light' by James Young and George Forbes | [1881] |
| RR/15/191 | Referee's report by Silvanus Phillips Thompson, on a paper 'Description of a range-finder' by George Forbes | 2 August 1901 |
| L&P/3/345 | Letter, 'On the patella or limpet' from George Forbes to John Eaton Dodsworth | 1758 |
| RR/15/336 | Referee's report by Charles Vernon Boys, on a paper 'A portable telemeter, or range-finder' by G Forbes | 1 March 1902 |
| NLB/66/626 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the General Secretary, Royal Society of Edinburgh, Edinburgh | 5 June 1924 |
| NLB/35/11 | Copy letter from Archibald Geikie, to Professor George Forbes, Fellow of the Royal Society | 27 March 1907 |
| RR/8/356 | Referee's report by George Gabriel Stokes, on a paper 'Experimental determination of the velocity of white and of coloured light' by James Young and George Forbes | 19 July 1881 |
| MDA/C/26/60 | Application to the Scientific Relief Fund, on behalf of George Forbes | 1930-1932 |
| MC/11/209 | Letter from George Forbes, Scientific Club, 7 Savile Row, to Professor [George Gabriel] Stokes, [Secretary of the Royal Society] | 4 May 1878 |
| MC/11 | Volume 11 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1877-1879 |
| PP/8/13 | Paper, 'On a thermopile and galvanometer combined' by George Forbes | 1886 |
| PP/10/15 | Paper, 'A thermal telephone transmitter' by George Forbes | 1887 |
| RR/17/163 | Referee's report by Henry Bradwardine Jackson, on a paper 'Exterior ballistics. (No. 2.)' by George Forbes | 14 November 1907 |