| RefNo | Title | Date |
| EC/1820/22 | South, Sir James: certificate of election to the Royal Society | |
| MC/5/250 | Letter from Sir J [James] South, Observatory Kensington, to [Charles Richard Weld], Assistant Secretary of the Royal Society | 19 June 1856 |
| MC/1/241b | Letter from the Royal Society to Sir James South | 29 June 1830 |
| MM/15/71 | Cuttings from 'The Times' containing James South's letter about pseudo-Fellows, and some genuine, lending their names to the promotion of Railway schemes | 1845 |
| DM/2/147 | Copy of a petition from Sir James South for a Royal charter of incorporation | c.1831 |
| MC/5/202 | Letter from W [William] Sharpey, Secretary of the Royal Society, to Sir James South | 20 June 1855 |
| MM/10/7 | A satirical poster holding up to scorn some contemporary astronomers - notably G B Airy and Richard Sheepshanks | 1843 |
| MC/1/308 | Letter from [Sir John William] Lubbock, [Treasurer of the Royal Society], St. James' Place, to the Royal Society | 29 May 1831 |
| MC/1/265 | Letter from Sir James South, Observatory Kensington, to Prince Augustus Frederick, President of the Royal Society and to the Council | 22 December 1830 |
| MS/426/560 | Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to Sir J [James] South | 8 March 1856 |
| MS/426/563 | Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to Sir James South | 1 April 1856 |
| MS/426/62 | Copy letter from [Peter Mark] Roget, Secretary of the Royal Society; to Sir James South | 6 October 1842 |
| MS/426/547 | Copy letter from W [William] Sharpey, Secretary of the Royal Society; to Sir James South | 28 June 1855 |
| MC/5/203 | Letter from J [James] South, Observatory Kensington, to W [William] Sharpey, Secretary of the Royal Society, Somerset House | 22 June 1855 |
| MC/1/206 | Letter from Sir James South, Observatory Kensington, to [Davies Gilbert] President of the Royal Society and to the Council | 11 March 1830 |
| MC/1/100 | Letter from James South, Hackney [?] Street, to Sir Humphry Davy, President of the Royal Society | 15 January 1824 |
| MC/1/138 | Letter from James South, 6 Compton Terrace, Islington, to [Sir Humphry Davy], President of the Royal Society | 24 November 1825 |
| MC/1/217 | Letter from Sir James South, Observatory Kensington, to [Davies Gilbert], President of the Royal Society and to the Council | 22 April 1830 |
| MC/1/209 | Letter from Davies Gilbert, President of the Royal Society, to the Royal Society | 16 March 1830 |
| MC/1/218 | Letter from Dr. [Peter Mark] Roget, Secretary of the Royal Society, Bernard Street, to Sir James South | 22 April 1830 |
| MC/1/207 | Letter from [Dr. Peter Mark Roget], Secretary of the Royal Society, Bernard Street, to [James] South | 13 March 1830 |
| MC/1/219 | Letter from Dr. [Peter Mark] Roget, Secretary of the Royal Society, Bernard Street, to Sir James South | 22 April 1830 |
| MC/1/236 | Letter from James South, Observatory Kensington, to [Davies Gilbert], President of the Royal Society and to the Council | 10 June 1830 |
| MC/1/238 | Letter from [Dr. Peter Mark Roget] to [James South] | June 1830 |
| PT/18/5 | Paper, 'Re-examination of seven double stars made whilst the former part of this communication was in the press' by James South | February-March 1826 |
| MC/1/241a | Letter from Sir James South, Observatory Kensington, to [Davies Gilbert], President of the Royal Society and to the Council | 28 June 1830 |
| MC/2 | Volume 2 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1832-1838 |
| MC/2/23 | Letter from R. Byham, Office of Ordnance, to Dr. [Peter Mark] Roget, Secretary of the Royal Society | 10 February 1832 |
| MC/2/202 | Letter from Sir James South, Observatory Kensington, to [Prince Augustus Frederick, the Duke of Sussex], President of the Royal Society | 7 April 1836 |
| RR/5/249 | Referee's report by John Couch Adams, on a paper 'Experiments, made at Watford, on the vibrations occasioned by railway trains passing through a tunnel' by James South | 11 July 1863 |
| MC/3/237 | Letter from Dr. Peter Mark Roget, [Secretary of the Royal Society], to Sir James South | 6 October 1842 |
| MC/3/244 | Letter from James South, Stover House, Newton Abbot, Devon, to the Marquis of Northampton, President of the Royal Society, and to the Council | 2 November 1842 |
| MC/3/236 | Letter from William Shuckard, Royal Society Library, to Sir John William Lubbock, Vice-President and Treasurer of the Royal Society | 6 October 1842 |
| PT/18/4 | Index, accompanying 'Observations of the apparent distances and positions of 448 double and triple stars, made in the years 1823, 1824, and 1825; together with a re-examination of 36 stars of the same description, the distances and positions of which were communicated in a former memoir' by James South | 22 October 1825 |
| MC/1 | Volume 1 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1800-1831 |
| MS/426/536 | Copy letter from W [William] Sharpey, Secretary of the Royal Society; to Sir James South | 23 April 1855 |
| MC/5/198 | Letter from J [James] South, Observatory Kensington, to [Lord Wrottesley], the President of the Royal Society | 5 April 1855 |
| MC/5/234 | Letter from Sir J [James] South, Observatory Kensington, to [Charles Richard] Weld, Assistant Secretary of the Royal Society | 19 March 1856 |
| MC/5/230 | Letter from Sir James South, Observatory Kensington, to [Charles Richard] Weld, Assistant Secretary of the Royal Society | 10 March 1856 |
| MC/5/231 | Letter from Sir James South, Observatory Kensington, to [Charles Richard] Weld, Assistant Secretary of the Royal Society | 11 March 1856 |
| MS/426/561 | Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to Sir J [James] South | 11 March 1856 |
| MC/5/229 | Letter from Sir James South, Observatory Kensington, to [Charles Richard] Weld, Assistant Secretary of the Royal Society | 8 March 1856 |
| MC/5/238 | Letter from Sir J [James] South, Observatory Kensington, to [Charles Richard Weld], Assistant Secretary of the Royal Society | 2 April 1856 |
| MC/5/236 | Letter from Sir J [James] South, Observatory Kensington, to [Charles Richard] Weld, Assistant Secretary of the Royal Society | 31 March 1856 |
| MC/5 | Volume 5 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1851-1858 |
| PT/18/6 | Paper, 'Actual calculations and results' by [James South] | [1826] |
| MC/6/330 | Letter from J [James] South, Observatory Kensington, to [Sir Edward Sabine], President of the Royal Society, and to the Council | 10 June 1863 |
| MC/7/72 | Letter from Antoine d'Abbadie, 104 rue de Bac, Paris, to General [Edward] Sabine, President of the Royal Society | 21 May 1864 |
| MC/7/205 | Letter from J [James] South, Observatory Kensington, to W [Walter] White, Assistant Secretary of the Royal Society | 10 May 1865 |
| MC/7/204 | Letter from J [James] South, Observatory Kensington, to W [Walter] White, Assistant Secretary of the Royal Society | 9 May 1865 |
| MC/7 | Volume 7 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1864-1866 |
| RR/5/250 | Referee's report by Thomas Romney Robinson, on a paper 'Experiments, made at Watford, on the vibrations occasioned by railway trains passing through a tunnel' by James South | 12 August 1863 |
| PT/18/3 | Observations, accompanying 'Observations of the apparent distances and positions of 448 double and triple stars, made in the years 1823, 1824, and 1825; together with a re-examination of 36 stars of the same description, the distances and positions of which were communicated in a former memoir' by James South | 22 October 1825 |
| PT/18/14 | Paper, 'On the discordances between the sun's observed and computed right ascensions as determined at the Blackman Street Observatory, in the years 1821 and 1822; experiments to shew that they do not originate in instrumental derangement; also a description of a seven-feet transit with which the observations were procured, and upon which the experiments were made' by James South | 1 June 1826 |
| PT/18/2 | Paper, 'Observations of the apparent distances and positions of 448 double and triple stars, made in the years 1823, 1824, and 1825; together with a re-examination of 36 stars of the same description, the distances and positions of which were communicated in a former memoir' by James South | 22 October 1825 |
| PT/73/12/16 | Drawings, sections through axis and telescope by [T Bradley] | [1826] |