| RefNo | Title | Date |
| EC/1851/06 | Elliot, Charles Morgan: certificate of election to the Royal Society | |
| PT/41/1/2 | Plate, locations of magnetic instruments within observatory tent on Direction Island by Charles Morgan Elliot | [1851] |
| RR/2/65 | Referee's report by William Whewell, on a paper 'On the lunar atmospheric tide at Singapore' by Charles Morgan Elliot | 25 March 1852 |
| MS/257/2/102 | Letter from Charles Morgan Elliot to Edward Sabine | 18 October 1842 |
| MS/426/88 | Copy letter from Northampton [Spencer Joshua Alwyne Compton] President of the Royal Society; to the Chairman of the Court of Directors [of the East India Company] | 2 May 1844 |
| MS/426/454 | Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to J C [James Cosmo] Melvill Esq | 15 January 1852 |
| MS/257/2/112 | Letter from Charles Morgan Elliot to Edward Sabine | 8 January 1850 |
| MC/4/309 | Letter from James [Cosmo] Melvill, East India House, to Thomas Bell, [Secretary of the Royal Society] | 10 December 1849 |
| PT/41/1/3 | Plate, locations of magnetic instruments within observatory tent in Batavia [Jakarta, Indonesia] by Charles Morgan Elliot | [1851] |
| PT/41/1 | Paper, ['Magnetic survey of the Eastern Archipelago'] by Charles Morgan Elliot | [1851] |
| PT/41/1/1 | Manuscript, ['Magnetic survey of the Eastern Archipelago'] by Charles Morgan Elliot | [1851] |
| PT/43/9 | Paper, 'On the lunar atmospheric tide at Singapore' by Captain C M [Charles Morgan] Elliot | [1851] |
| MC/4/293 | Letter from Captain [Charles Morgan] Elliott, Madras Engineers, to Colonel Edward Sabine, Foreign Secretary of the Royal Society | 6 August 1849 |
| MC/5/18 | Letter from C M [Charles Morgan] Elliot, Captain of the Madras Engineers, Lanes Hotel, St Alban's Place, to the [Earl of Rosse] President of the Royal Society and to the Council | 18 June 1851 |
| MS/426/452 | Copy letter from S H [Samuel Hunter] Christie, Secretary of the Royal Society; to J C [James Cosmo] Melvill Esq | 28 June 1851 |
| MC/4 | Volume 4 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1844-1850 |
| MC/5/105 | Letter from James C [Cosmo] Melvill, East India House, to S [Samuel] Hunter Christie, [Secretary of the Royal Society] | 18 May 1853 |
| MS/426/515 | Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to Sir J C [James Cosmo] Melvill | 5 May 1854 |
| MS/119/2/117 | Incomplete letter from Charles Morgan Elliot to Humphrey Lloyd | 19th century |
| MS/119/2/116 | Letter from Charles Morgan Elliot, Singapore to Humphrey Lloyd | 15 March 1842 |
| MS/119/2/115 | Incomplete letter from Charles Morgan Elliot, Singapore to Humphrey Lloyd | 9 February 1842 |
| MS/119/2/120 | First half of letter from Charles Morgan Elliot to Humphrey Lloyd | 3 March 1843 |
| MS/119/2/118 | Letter from Charles Morgan Elliot, Singapore to Humphrey Lloyd | 8 May 1842 |
| MS/119/2/119 | Second half of letter from Charles Morgan Elliot, Singapore to Humphrey Lloyd | 3 March 1843 |
| MS/257/2/107 | Letter from Charles Morgan Elliot, Darjeeling to Edward Sabine | 31 August 1848 |
| MS/257/2/104 | Letter from Charles Morgan Elliot, Singapore to Edward Sabine, Woolwich | 1 November 1847 |
| MS/257/2/101 | Letter from Charles Morgan Elliot, Singapore to [Edward Sabine] | 10 May 1842 |
| MS/257/2/108 | Letter from Charles Morgan Elliot, Madras [Chennai] to Edward Sabine | 10 June 1849 |
| MS/257/2/111 | Letter from Charles Morgan Elliot, Pimlico to Edward Sabine | 28 December 1849 |
| MS/257/2/110 | A fragment [by Charles Morgan Elliot] | 19th century |
| MS/257/2/114 | Letter from Charles Morgan Elliot, Singapore to Edward Sabine, Woolwich | 24 March [1815-1852] |
| MS/257/2/105 | Letter from Charles Morgan Elliot, Singapore to Edward Sabine, Woolwich | 9 December 1847 |
| MS/257/2/115 | Copy of a letter from Charles Morgan Elliot to [Charles James Buchanan] Riddell | 17 March 1845 |
| MS/257/2/113 | Letter from Charles Morgan Elliot, Pimlico Lodge to Edward Sabine | 6 February 1850 |
| MS/257/2/100 | Letter from Charles Morgan Elliot, Singapore to [Edward Sabine] | 14 March 1842 |
| MS/257/2/106 | Letter from Charles Morgan Elliot, At sea to Edward Sabine | 4 August 1848 |
| MS/257/2/109 | Letter from Charles Morgan Elliot, Madras [Chennai] to Edward Sabine | August 1849 |
| MS/257/2/103 | Letter from Charles Morgan Elliot, Sarawak to Edward Sabine, Somerset House, London | 18 March 1845 |
| MC/4/296 | Letter from Sir [John Frederick William] Herschel, Collingwood, to Colonel [Edward] Sabine, [Foreign Secretary of the Royal Society] | 1 November 1849 |
| MC/5 | Volume 5 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1851-1858 |