| Reference number | Title | Date |
| EC/1904/16 | Walker, Sir Gilbert Thomas: certificate of election to the Royal Society | |
| IM/Maull/004765 | Walker, Sir Gilbert Thomas | nd |
| IM/GA/Russell/2 | Walker, Sir Gilbert Thomas | nd |
| NLB/38/349 | Copy letter from Robert William Frederick Harrison, to Dr Gilbert Thomas Walker, Fellow of the Royal Society, c/o Army & Navy Co-operative Society, Victoria Street, S.W. | 18 July 1908 |
| NLB/14/542 | Copy letter from Arthur William Rucker, to Gilbert Thomas Walker, John Alexander McClelland and Charles Thomas Rees Wilson | 26 March 1897 |
| NLB/14/871 | Copy letter from an unknown correspondent, to Gilbert Thomas Walker, [Fellow of the Royal Society] | 31 May 1897 |
| NLB/15/67 | Copy letter from Robert William Frederick Harrison, to Gilbert Thomas Walker, [Fellow of the Royal Society], Trinity College, Cambridge | 18 June 1897 |
| NLB/29/10 | Copy letter from Robert William Frederick Harrison, to Gilbert Thomas Walker, Fellow of the Royal Society | 14 June 1904 |
| MC/19/817 | Letter from Gilbert [Thomas] Walker, Meteorological Office, Simla, to the Royal Society | 25 May 1904 |
| NLB/33/225 | Copy letter from Joseph Larmor, to Dr Gilbert Thomas Walker, Fellow of the Royal Society | 19 July 1906 |
| NLB/36/298 | Copy letter from Robert William Frederick Harrison, to Gilbert Thomas Walker, Fellow of the Royal Society | 8 October 1907 |
| MC/19/818 | Letter from Gilbert [Thomas] Walker, Meteorological Office, Simla, to [Joseph] Larmor | 26 May 1904 |
| NLB/37/187 | Copy letter from Robert William Frederick Harrison to Messrs W Thacker & Co, 2 Creed Lane, Ludgate Hill, EC | 10 February 1908 |
| NLB/37/792 | Copy letter from Robert William Frederick Harrison to W A Webb, The Hutch, Battledown Approach, Cheltenham | 16 May 1908 |
| MC/24/203 | Letter from E.P. Harrison, on behlaf of Gilbert [Thomas] Walker, Director-General of Observatories, to The Secretary and Librarian, Royal Society, London | 6 July 1909 |
| NLB/40/210 | Copy letter from Robert William Frederick Harrison to Professor J [John] H [Henry] Poyting FRS, Chairman of the Physics and Chemistry Committee | 3 May 1909 |
| NLB/46/452 | Copy letter from Joseph Larmor, to Dr [Gilbert Thomas] Walker, Fellow of the Royal Society | 1 August 1912 |
| NLB/45/395 | Copy letter from Robert William Frederick Harrison to Dr G [Gilbert] T [Thomas] Walker FRS, 4 Southdown Road, Seaford | 28 February 1912 |
| RR/13/304 | Referee's report by Edward John Routh, on a paper 'On boomerangs' by Gilbert Thomas Walker | 17 May 1897 |
| NLB/65/154 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr [Gilbert Thomas] Walker, FRS | 21 August 1923 |
| NLB/51/681 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Dr Gilbert Walker FRS, Farnley, Lymington, Hampshire | 21 May 1915 |
| NLB/56/851 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Gilbert [Thomas] Walker, FRS; Clarence Cottage, Swanage, Dorset | 16 June 1919 |
| NLB/54/604 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Harrison & Sons | 30 June 1917 |
| RR/13/302 | Referee's report by Horace Lamb, on a paper 'On boomerangs' by Gilbert Thomas Walker | 3 July 1897 |
| RR/11/101 | Referee's report by Horace Lamb, on a paper 'Repulsion and rotation produced alternating electric currents' by Gilbert Thomas Walker | 28 November 1891 |
| RR/44/36 | Referee's report by Gilbert Thomas Walker, on a paper 'The electric field of overhead thunderclouds' by Sudhansu Kumar Banerji | November 1931 |
| RR/44/117 | Referee's report by Harold Jeffreys, on a paper 'On periodicity in series of related terms' by Gilbert Thomas Walker | February 1931 |
| RR/46/99 | Referee's report by Gilbert Thomas Walker, on a paper 'A new primary standard barometer' by J E Sears and J S Clark | [September 1932] |
| RR/44/118 | Second referee's report by Harold Jeffreys, on a paper 'On periodicity in series of related terms' by Gilbert Thomas Walker | March 1931 |
| RR/46/97 | Referee's report by Gilbert Thomas Walker, on a paper 'The characteristics of a deep focus earthquake: a study of the disturbance of February 20, 1931' by F J Scrase | [August 1932] |
| RR/51/35 | Referee's report by Gilbert Thomas Walker, on a paper 'The vertical distribution of atmospheric ozone in high latitudes' by A R Meetham and Gordon Miller Bourne Dobson | [October 1934] |
| RR/53/91 | Referee's report by Gilbert Thomas Walker, on a paper 'The vertical distribution of ozone in the atmosphere' by F W Paul Götz, A R Meetham and Gordon Miller Bourne Dobson | [March 1934] |
| RR/57/89 | Referee's report by Gilbert Thomas Walker, on a paper 'The movement of desert sand' by Ralph Alger Bagnold | [July 1936] |
| NLB/64/741 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Doctor [Gilbert Thomas] Walker FRS | 11 June 1923 |
| NLB/63/404 | Copy letter from unknown correspondent; to Dr. [Gilbert Thomas] Walker, FRS | 09 October 1922 |
| NLB/63/445 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Gilbert Thomas] Walker Esq., C.S.I., FRS, Meteorological Office, Simla, India | 16 October 1922 |
| NLB/63/731 | Copy letter from unknown correspondent; to Dr. [Gilbert Thomas] Walker, FRS | 08 November 1922 |
| NLB/64/662 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr [Gilbert Thomas] Walker; FRS | 29 May1923 |
| NLB/64/678 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Horace] Lamb [Chairman of the Mathematics Committee] FRS | 31 May 1923 |
| NLB/70/730 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Gilbert Walker, CSI, FRS | 14 July 1927 |
| NLB/70/949 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Gilbert Walker, CSI, FRS | 18 November 1927 |
| NLB/71/657 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Gilbert Walker, C.S.I., FRS | 26 September 1928 |
| NLB/72/731 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Gilbert Walker, CSI, FRS | 26 March 1930 |
| NLB/73/15 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Gilbert Walker, C.S.I., FRS | 14 October 1930 |
| NLB/64/732 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society;[Robert John Strutt] Lord Rayleigh | 11 June 1923 |
| NLB/31/110 | Copy letter from Robert William Frederick Harrison, to Dr Gilbert Thomas Walker, Fellow of the Royal Society | 22 June 1905 |
| RR/11/213 | Referee's report by William Davidson Niven, on a paper 'Repulsion and rotation produced alternating electric currents' by Gilbert Thomas Walker | 27 January 1892 |
| NLB/56/833 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Gilbert [Thomas] Walker, FRS; Clarence Cottage, Swanage, Dorset | 5 June 1919 |
| RR/13/303 | Referee's report by Alfred George Greenhill, on a paper 'On boomerangs' by Gilbert Thomas Walker | 10 May 1897 |
| NLB/66/548 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Prof. [Sydney] Chapman | 29 May 1924 |
| RR/11/214 | Letter from William Davidson Niven, on a paper 'Repulsion and rotation produced alternating electric currents' by Gilbert Thomas Walker to the Secretary of the Royal Society | 8 February 1892 |
| AP/78/6 | Paper, 'On the electricity of rain and its origin in thunderstorms' by G C [George Clarke] Simpson | 1909 |
| MC/24/204 | Letter from Gilbert [Thomas] Walker, India Meteorological Department, Simla, to Sir Joseph Larmor, Secretary of the Royal Society, Burlington House, London | 2 December 1909 |
| MC/27/184 | Letter from Gilbert [Thomas] Walker, Director General of Observatories, India Meteorological Department, Simla, to The Secretary, Royal Society, Burlington House, London, W | 21 October 1912 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |
| MC/32/269 | Letter from Gilbert [Thomas] Walker, Meteorological Department, Simla, India, to the [Royal Society] | 3 August 1917 |
| NLB/54/763 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Gilbert Thomas] Walker, FRS | 14 September 1917 |