| RefNo | Title | Date |
| EC/1851/06 | Elliot, Charles Morgan: certificate of election to the Royal Society | |
| MA/337/6 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 2 January-31 December 1843 |
| MA/337/1 | Meteorological observations at the Singapore Observatory, by [Charles Morgan Elliot?] | 8 October-31 December 1841 |
| MA/337 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1841-1845 |
| MA/394/1 | Memorandum listing meteorological and magnetic observations, by Charles Morgan Elliot | no date [1842] |
| MA/335/10/11 | Extraordinary magnetic observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 14-15 April 1845 |
| MA/340/2/1 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 4-30 January 1843 |
| 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 |
| MA/338 | Meteorological curves recorded at Singapore Observatory, supervised by Charles Morgan Elliot | 1 January 1842-31 December 1845 |
| MA/336 | Meteorological observations made at Singapore, by C M [Charles Morgan] Elliot | 1841-1845 |
| PT/41/1/3 | Plate, locations of magnetic instruments within observatory tent in Batavia [Jakarta, Indonesia] by Charles Morgan Elliot | [1851] |
| MA/334/15 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-29 February 1844 |
| AP/31/6/2 | Unpublished letter, regarding the survey of the East Indian Archipelago from Charles Morgan Elliot to the Military Secretary | 8 June 1849 |
| 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] |
| MA/337/2 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2 May-31 December 1842 |
| MA/337/3 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2 January-31 December 1843 |
| MA/337/11/1 | Experiments on magnetic deflection at the Singapore Observatory, by Charles Morgan Elliot | 18-29 April 1845 |
| AP/31/6 | Published and unpublished letters, regarding the survey of the East Indian Archipelago from various correspondents | 1849 |
| 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 |
| MA/337/5/8 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 August 1845 |
| 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 |
| MA/335/10/5 | Extraordinary magnetic curve made at Singapore Magnetic Observatory, by [Charles Morgan Elliot] | 5-7 April 1843 |
| MA/336/8 | Thermometer observations made at Singapore Observatory, by Charles Morgan Elliot | December 1841 and December 1842 |
| MA/337/5/2 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-28 February 1845 |
| MA/340/1/18 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 19-28 November 1843 |
| MA/340/1/20 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 19-22 December 1843 |
| 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 |
| MA/335/10/8 | Extraordinary magnetic curves made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 25-27 July 1843 |
| MA/335/10/6 | Extraordinary magnetic observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 25-26 July 1843 |
| MA/340/1/19 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 19-28 November 1843 |
| 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 |
| MA/337/5/4 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 April 1845 |
| MA/335/6 | Magnetic curves made from observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 24-31 July 1844 |
| MA/338/1 | Wind and rain curves recorded at Singapore Observatory, supervised by Charles Morgan Elliot | 1 January-31 December 1842 |
| AP/31/6/1 | Letter, regarding the survey of the East Indian Archipelago from Charles Morgan Elliot to Colonel [Edward] Sabine | 6 August 1849 |
| MA/394 | Meteorological and magnetic observations made at Sarawak [Malaysia] and Singapore, by Charles Morgan Elliot | 1842 |
| MA/340/1/16 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 6-10 October 1843 |
| MA/340/1 | Observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | January 1843-June 1845 |
| MA/336/5 | Wind and rain observations made at Singapore Observatory, by Charles Morgan Elliot | 1 January-31 December 1844 |
| MA/394/15 | Plan of the Sarawak Observatory [Malaysia], by Charles Morgan Elliot | [1842] |
| MA/394/13 | Barometrical observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 17 October-3 December 1842 |
| MA/394/5 | Magnetic observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 26 November 1842 |
| MA/394/3 | Magnetic observations made at various locations in Singapore and Sarawak [Malaysia], by Charles Morgan Elliot | 23 October-5 December 1842 |
| MA/394/2 | Meteorological observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 17 October-3 December 1842 |
| MA/394/4 | Magnetic observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 20 October 1842 |
| MA/394/6 | Magnetometer and meteorological observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 20 October 1842 |
| MA/394/7 | Magnetometer and meteorological observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 26 November 1842 |
| MA/394/8 | Magnetometer and meteorological observations made at Singapore [?], by Charles Morgan Elliot | October-December 1842 |
| MA/394/9 | Magnetometer and meteorological observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 17 October-3 December 1842 |
| MA/394/10 | Barometer observations made at Sarawak [Malaysia], by Charles Morgan Elliot | 17 October-5 November 1842 |
| MA/394/11 | Declination magnetometer observations made at Sarawak [Malaysia] and Singapore, by Charles Morgan Elliot | 17-31 October 1842 |
| MA/394/12 | Horizontal magnetometer observations made at Sarawak [Malaysia] and Singapore, by Charles Morgan Elliot | 17-31 October 1842 |
| MA/394/14 | Longitude observations made at various locations in Borneo, by Charles Morgan Elliot | 19 October-19 November 1842 |
| MA/394/16 | Abstract of longitudes and latitudes at various locations in Borneo, by Charles Morgan Elliot | [1842] |
| MA/394/17 | Notebook of dip needle observations, made largely at Sarawak Observatory [Malaysia], by Charles Morgan Elliot | 6 October-30 November 1842 and no date |
| MA/394/18 | Notebook of dip needle observations, made at Singapore and at Sarawak Observatory [Malaysia], by Charles Morgan Elliot | 26 September-15 December 1842 |
| MA/394/19 | Summary of gravitational intensities at Sarawak [Malaysia], by Charles Morgan Elliot | October-November 1842 |
| MA/394/20 | Calculations of horizontal intensities at Sarawak [Malaysia], by Charles Morgan Elliot | 6 October-30 December 1842 |
| MA/394/21 | Note on the comparison of thermometers and barometers at Singapore and Sarawak [Malaysia], by Charles Morgan Elliot | [1842] |
| MA/340/2 | Observations of magnetic vibration at the Singapore Observatory, by Charles Morgan Elliot | January 1843-October 1845 |
| MC/5 | Volume 5 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1851-1858 |
| MA/340/2/3 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 3-28 April 1843 |
| MA/337/11/9 | Experiments on magnetic vibration at the Singapore Observatory, by Charles Morgan Elliot | 17-28 June 1845 |
| MA/340/2/21 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 12-29 October 1844 |
| MA/340/2/15 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 1-26 April 1844 |
| MA/335/1 | Magnetic curves made from observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 2 January-31 December 1843 |
| MA/337/5/9 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 September 1845 |
| MA/334/5 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 May 1843 |
| MA/334/3 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 March 1843 |
| MA/334/4 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-29 April 1843 |
| MA/334/9 | Memorandum on magnetic and meteorological observations, by Charles Morgan Elliot | [September 1843?] |
| MA/334/2 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-28 February 1843 |
| MA/334/6 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 June 1843 |
| MA/334/7 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 July 1843 |
| MA/334/1 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 2-31 January 1843 |
| MA/334/8 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 August 1843 |
| MA/334/13 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 December 1843 |
| MA/334/12 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 November 1843 |
| MA/334/11 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 2-31 October 1843 |
| MA/334/10 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 September 1843 |
| MA/334/16 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 March 1844 |
| MA/334/17 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 April 1844 |
| MA/334/14 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 January 1844 |
| MA/334/18 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 May 1844 |
| MA/334/19 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-29 June 1844 |
| MA/334/20 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 July 1844 |
| MA/334 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1843-1844 |
| MA/335 | Magnetic curves made from observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1843-1844 |
| MA/337/5/10 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 October 1845 |
| MA/334/21 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 August 1844 |
| MA/334/22 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 September 1844 |
| MA/334/23 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 October 1844 |
| MA/334/24 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 November 1844 |
| MA/334/25 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 December 1844 |
| MA/335/2 | Magnetic curves made from observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1 January-29 June 1844 |
| MA/335/4 | Magnetic curves made from observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1 August-31 October 1845 |
| MA/335/3 | Magnetic curves made from observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1 July 1844-31 July 1845 |
| MA/335/5 | Magnetic curves made from observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 October 1845 |
| MA/335/7 | Magnetic observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 2 January-31 December 1843 |
| MA/335/8 | Magnetic observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1 January-31 December 1844 |
| MA/335/9 | Magnetic observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1 January-31 October 1845 |
| MA/335/10 | Extraordinary magnetic observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | April 1843-April 1845 |
| MA/335/10/1 | Extraordinary magnetic observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 5-6 April 1843 |
| MA/335/10/2 | Extraordinary magnetic observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 5-6 April 1843 |
| MA/335/10/3 | Extraordinary magnetic observations at Singapore Magnetic Observatory, by Charles Morgan Elliot | 5-7 April 1843 |
| MA/335/10/4 | Extraordinary magnetic curve made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 5-7 April 1843 |
| MA/335/10/9 | Extraordinary magnetic curves made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 25 July 1843 |
| MA/335/10/10 | Extraordinary magnetic observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 17-18 April 1844 |
| MA/335/10/7 | Extraordinary magnetic observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 25-26 July 1843 |
| MA/336/2 | Wind observations made at Singapore Observatory, by [Charles Morgan Elliot] | 1 January-31 December 1841 |
| MA/336/6 | Wind and rain observations made at Singapore Observatory, by Charles Morgan Elliot | 1 January-31 October 1845 |
| MA/336/4 | Wind and rain observations made at Singapore Observatory, by Charles Morgan Elliot | 1 January-31 December 1843 |
| MA/336/3 | Wind and rain observations made at Singapore Observatory, by Charles Morgan Elliot | 1 January-31 December 1842 |
| MA/336/7 | Rainfall observations made at Singapore Observatory, by [Charles Morgan Elliot?] | 1 December 1840-31 December 1841 |
| MA/336/9 | Wind direction observations made at Singapore Observatory, by Charles Morgan Elliot | January 1841-September 1845 |
| MA/336/10 | Cloud observations made at Singapore Observatory, by Charles Morgan Elliot | 1 March 1844-28 February 1845 |
| MA/336/1 | Wind curves made from observations at Singapore, by C M [Charles Morgan] Elliot | 1 June-31 December 1832 |
| MA/338/4 | Wind and rain curves recorded at Singapore Observatory, supervised by Charles Morgan Elliot | 1 January-31 December 1845 |
| MA/338/3 | Wind and rain curves recorded at Singapore Observatory, supervised by Charles Morgan Elliot | 1 January-31 December 1844 |
| MA/338/2 | Wind and rain curves recorded at Singapore Observatory, supervised by Charles Morgan Elliot | 1 January-31 December 1843 |
| MA/337/5 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1 January-31 October 1845 |
| MA/337/4 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1 January-31 December 1844 |
| MA/337/4/4 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 April 1844 |
| MA/337/4/2 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-29 February 1844 |
| MA/337/4/3 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 March 1844 |
| MA/337/4/1 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 January 1844 |
| MA/337/4/5 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 May 1844 |
| MA/337/4/6 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-29 June 1844 |
| MA/337/4/7 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 July 1844 |
| MA/337/4/8 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 August 1844 |
| MA/337/5/1 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 January 1845 |
| MA/337/4/9 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2-30 September 1844 |
| MA/337/4/10 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 October 1844 |
| MA/337/4/11 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 November 1844 |
| MA/337/4/12 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2-31 December 1844 |
| MA/337/5/7 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 July 1845 |
| MA/337/5/3 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 March 1845 |
| MA/337/5/5 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 May 1845 |
| MA/337/5/6 | Meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2-30 June 1845 |
| MA/337/6/2 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 2-31 January 1843 |
| MA/337/6/5 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 1-29 April 1843 |
| MA/337/6/6 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 May 1843 |
| MA/337/6/4 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 March 1843 |
| MA/337/6/7 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 June 1843 |
| MA/337/6/3 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 1-28 February 1843 |
| MA/337/6/8 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 July 1843 |
| MA/337/7/5 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 May 1844 |
| MA/337/7 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1 January-31 December 1844 |
| MA/337/6/13 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 December 1843 |
| MA/337/7/1 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 January 1844 |
| MA/337/7/2 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-29 February 1844 |
| MA/337/6/9 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 August 1843 |
| MA/337/6/12 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 November 1843 |
| MA/337/6/10 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 September 1843 |
| MA/337/7/3 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 March 1844 |
| MA/337/7/4 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 April 1844 |
| MA/337/7/6 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-29 June 1844 |
| MA/337/8/7 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 July 1845 |
| MA/337/7/7 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 July 1844 |
| MA/337/7/9 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2-30 September 1844 |
| MA/337/7/8 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 August 1844 |
| MA/337/7/10 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 October 1844 |
| MA/337/8 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1 January-31 October 1845 |
| MA/337/7/11 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 November 1844 |
| MA/337/8/1 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 January 1845 |
| MA/337/7/12 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2-31 December 1844 |
| MA/337/8/2 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-28 February 1845 |
| MA/337/8/5 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 May 1845 |
| MA/337/8/3 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 March 1845 |
| MA/337/8/4 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 April 1845 |
| MA/337/9 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | January 1843-February 1845 |
| MA/337/8/6 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2-30 June 1845 |
| MA/337/10 | Experimental magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | June 1843-April 1845 |
| MA/337/8/8 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 August 1845 |
| MA/337/8/9 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 September 1845 |
| MA/337/8/10 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 1-31 October 1845 |
| MA/337/10/2 | Experimental magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 19 July-18 November 1843 |
| MA/337/6/11 | Magnetic and meteorological observations at the Singapore Observatory, by Charles Morgan Elliot | 2-31 October 1843 |
| MA/340/1/1 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 13-31 January 1843 |
| MA/337/11/2 | Experiments on magnetic vibration at the Singapore Observatory, by Charles Morgan Elliot | 18-29 April 1845 |
| MA/337/10/3 | Experimental magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | January 1844-March 1845 |
| MA/337/10/1 | Experimental magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 14 June 1843-April 1845 |
| MA/337/10/4 | Experimental magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | 12-16 April 1845 |
| MA/337/11 | Experimental magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | April-June 1845 |
| MA/337/12 | Magnetic curves made from observations at the Singapore Observatory, by Charles Morgan Elliot | February 1843-November 1845 |
| MA/337/11/7 | Experiments on magnetic deflection at the Singapore Observatory, by Charles Morgan Elliot | 17-28 June 1845 |
| MA/337/11/5 | Experiments on magnetic deflection at the Singapore Observatory, by Charles Morgan Elliot | 22-31 May 1845 |
| MA/337/11/8 | Experiments on magnetic deflection at the Singapore Observatory, by Charles Morgan Elliot | 17-27 June 1845 | 16 August 1845 |
| MA/337/11/6 | Experiments on magnetic vibration at the Singapore Observatory, by Charles Morgan Elliot | 22-31 May 1845 |
| MA/337/11/3 | Experiments on magnetic deflection at the Singapore Observatory, by Charles Morgan Elliot | 22-28 May 1845 | 7 August 1845 |
| MA/337/11/4 | Experiments on magnetic vibration at the Singapore Observatory, by Charles Morgan Elliot | 1-2 May 1845 |
| MA/337/13 | Meteorological curves made from observations at the Singapore Observatory, by Charles Morgan Elliot | February 1843-November 1845 |
| MA/340 | Magnetic observations at the Singapore Observatory, by Charles Morgan Elliot | January 1843-October 1845 |
| MA/340/1/7 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 2 May-2 June 1843 |
| MA/340/1/2 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 7-28 February 1843 |
| MA/340/1/4 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 18-28 April 1843 |
| MA/340/1/6 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 12-26 April 1843 |
| MA/340/1/9 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 6-30 June 1843 |
| MA/340/1/5 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 4 April 1843 |
| MA/340/1/3 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 3-28 March 1843 |
| MA/340/1/8 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 6-27 June 1843 |
| MA/340/1/10 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 4-28 July 1843 |
| MA/340/1/11 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 4-28 July 1843 |
| MA/340/1/12 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 1 August-1 September 1843 |
| MA/340/1/13 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 1 August-1 September 1843 |
| MA/340/1/14 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 29 August-29 September 1843 |
| MA/340/1/15 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 29 August-2 October 1843 |
| MA/340/1/17 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 6-17 October 1843 |
| MA/340/1/21 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 10 January-2 February 1844 |
| MA/340/1/27 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 17-20 June 1844 |
| MA/340/1/26 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 8-25 May 1844 |
| MA/340/1/29 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 31 August-2 September 1844 |
| MA/340/1/28 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 26-31 July 1844 |
| MA/340/1/32 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 30 November 1844 |
| MA/340/1/30 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 2-27 September 1844 |
| MA/340/1/23 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 6-27 February 1844 |
| MA/340/1/22 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 11 December 1843-2 January 1844 |
| MA/340/1/24 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 1-30 March 1844 |
| MA/340/1/25 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 2-6 April 1844 |
| MA/340/1/31 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 30 November-4 December 1844 |
| MA/340/2/2 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 March 1843 |
| MA/340/1/33 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 3 February 1845 |
| MA/340/1/35 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 12-19 June 1845 |
| MA/340/1/34 | Notebook of observations of magnetic dip at the Singapore Observatory, by Charles Morgan Elliot | 30 April 1845 |
| MA/340/2/4 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 8-29 May 1843 |
| MA/340/2/32 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 5-29 August 1845 |
| MA/340/2/6 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 3-31 July 1843 |
| MA/340/2/5 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 29 May-3 July 1843 |
| MA/340/2/7 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 3-28 August 1843 |
| MA/340/2/8 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 2-28 September 1843 |
| MA/340/2/11 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 2-27 December 1843 |
| MA/340/2/12 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 4-30 January 1844 |
| MA/340/2/10 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 3-27 November 1843 |
| MA/340/2/9 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 2-31 October 1843 |
| MA/340/2/13 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 5-26 February 1844 |
| MA/340/2/14 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 March 1844 |
| MA/340/2/16 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 5-30 May 1844 |
| MA/340/2/17 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 3-28 June 1844 |
| MA/340/2/18 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 4-31 July 1844 |
| MA/340/2/19 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 5-30 August 1844 |
| MA/340/2/20 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 13-28 September 1844 |
| MA/340/2/22 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 4-25 November 1844 |
| MA/340/2/23 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 2-26 December 1844 |
| MA/340/2/24 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 2-27 January 1845 |
| MA/340/2/28 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 1-28 April 1845 |
| MA/340/2/25 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 4-28 February 1845 |
| MA/340/2/26 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 5-28 March 1845 |
| MA/340/2/27 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 5-28 March 1845 |
| MA/340/2/29 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 1-30 May 1845 |
| MA/340/2/30 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 3-25 June 1845 |
| MA/340/2/31 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 4-31 July 1845 |
| MA/340/2/33 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 6-30 September 1845 |
| MA/340/2/34 | Notebook of magnetometer observations at the Singapore Observatory, by Charles Morgan Elliot | 6-28 October 1845 |
| MA/340/2/35 | Memorandum on Singapore observations, by Charles Morgan Elliot | January 1845 [?] |
| MA/340/2/36 | Memorandum on Singapore observations, by Charles Morgan Elliot | [1845?] |
| MA/340/2/37 | Memorandum on Singapore observations, by Charles Morgan Elliot | August 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 |
| MA/335/11 | Magnetic and meteorological curves made at Singapore Magnetic Observatory, by Charles Morgan Elliot | January-December 1843 |
| MA/335/12 | Magnetic and meteorological curves made at Singapore Magnetic Observatory, by Charles Morgan Elliot | January-December 1844 |
| MA/335/13 | Magnetic and meteorological curves made at Singapore Magnetic Observatory, by Charles Morgan Elliot | January-October 1845 |
| MA/335/14 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1 January-29 November 1845 |
| MA/335/14/1 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 January 1845 |
| MA/335/14/2 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-28 February 1845 |
| MA/335/14/3 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 March 1845 |
| MA/335/14/4 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 April 1845 |
| MA/335/14/5 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 May 1845 |
| MA/335/14/6 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 2-30 June 1845 |
| MA/335/14/7 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 July 1845 |
| MA/335/14/8 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 August 1845 |
| MA/335/14/9 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-30 September 1845 |
| MA/335/14/10 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 1-31 October 1845 |
| MA/335/14/11 | Magnetic and meteorological observations made at Singapore Magnetic Observatory, by Charles Morgan Elliot | 29 November 1845 |