| RefNo | Title | Date |
| EC/1854/07 | Hunt, Robert: certificate of election to the Royal Society | |
| MS/710/57 | Letter from Robert Hunt, Jermyn Street, London, to Robert Were Fox | 21 May 1873 |
| MS/710/63 | Letter from Robert Knowles, 11 Queen's Gardens, Lancaster Gate, to [Anna Maria] Fox | 10 August 1875 |
| MS/710/56 | Letter from Robert Hunt, Museum of Practical Geology, Jermyn Street, London, to Robert Were Fox | 13 April 1855 |
| MS/426/218 | Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to R [Robert] Hunt Esq | 28 September 1846 |
| MC/4/156 | Letter from Robert Hunt, Museum of Economic Geology, 6 Craig's Court, to the Royal Society | 24 September 1846 |
| NLB/1/484 | Copy letter from Michael Foster, to Robert Hunt, Fellow of the Royal Society | 28 June 1887 |
| MC/4/159 | Letter from Robert Hunt, Museum of Economic Geology, 6 Craig's Court, to Charles Richard Weld, [Assistant Secretary of the Royal Society] | 22 October 1846 |
| MS/426/226 | Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to R [Robert] Hunt Esq | 29 October 1846 |
| MC/10/361 | Letter from H W [Henry William] Bristow and Robert Hunt, Geological Survey Office, 28 Jermyn Street, to [Joseph Dalton Hooker], President of the Royal Society | 3 March 1876 |
| RR/1/109 | Referee's report by William Robert Grove, on an unnamed paper by Robert Hunt | [c. 1840] |
| NLB/3/212 | Copy letter from Herbert Rix, to Professor Michael Foster, Secretary, Royal Society | 10 April 1889 |
| PT/23/8 | Paper, 'On the influence of iodine, in rendering several argentine compounds, spread on paper, sensitive to light; and, on a new method of producing, with greater distinctness, the photographic image' by Robert Hunt | 5 May 1840 |
| MC/4 | Volume 4 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1844-1850 |
| RR/1/110 | Referee's report by John Fredrick William Herschel, on a paper 'On the influence of iodine in rendering several Argentine compounds, spread on paper, sensitive to light, and on a new method of producing, with greater distinctness, the photographic image' by Robert Hunt | [1840] |
| MC/10 | Volume 10 of miscellaneous correspondence regarding business matters, sent to the Royal Society | July 1873-1876 |
| MS/257/1/170 | Letter from William Radcliffe Birt, [Kew] Observatory, Old Deer Park, Richmond, Surrey to [Robert] Hunt | 14 November 1849 |
| MC/14/225 | Letter from Robert Hunt, Chelsea, to Herbert Rix | 14 June 1887 |
| MC/14/246 | Letter from Robert Hunt, Chelsea, to Michael Foster | 30 June 1887 |
| MC/14 | Volume 14 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1885-1888 |