| RefNo | Title | Date |
| DM/2/4 | Letter from the Lord Chamberlain to the Duke of Sussex | 9 March 1831 |
| MM/5/37 | Letter from Augustus Frederick, Duke of Sussex, Kensington Palace | 15 May 1833 |
| MM/5/36 | Letter from Augustus Frederick, Duke of Sussex, St Asaph | 18 August 1832 |
| MM/5/35 | Letter from Augustus Frederick, Duke of Sussex, to Kensington Palace | 3 January 1832 |
| MM/12/33 | Draft of a reply to Anthony Panizzi's pamphlet, by P M Roget | 27 November 1837 |
| MM/14/150 | Letter from TM Mason, 28 York Terrace, to the Duke of Sussex, President of the Royal Society | 24 October 1836 |
| DM/2/29 | Letter from the Duke of Sussex, Kensington Palace, to Francis Baily | 17 April 1834 |
| DM/2/9 | Declaration of the Duke of Sussex as President of the Royal Society under the Act 9 GEO IV cap 17 | 1830 |
| MM/12/4 | Letter from Anthony Panizzi, British Museum, to Duke of Sussex | 21 November 1834 |
| DM/1/78 | Draft of letter from Duke of Sussex, Kensington Palace, to Sir William Knighton | 11 August 1832 |
| MM/12/5 | Letter from Anthony Panizzi, British Museum, to Duke of Sussex | 18 December 1834 |
| DM/2/7 | 'Address to the Queen Adelaide' from the Duke of Sussex | 1831 |
| DM/2/5 | 'Address from His Royal Highness the Duke of Sussex to His Majesty King William IVth' | 1831 |
| DM/2/8 | Queen Adelaide's reply to the Duke of Sussex's address | 1831 |
| DM/1/79 | Draft of letter from J G Children, Somerset House, to Sir William Knighton | 12 May 1832 |
| AP/16/30/3 | Unpublished letter, 'The quadrature of the circle' from James Ryan to the Duke of Sussex | 11 September 1831 |
| MC/2/204 | Letter from Dr. [John] Davy, to [Prince Augustus Frederick, the Duke of Sussex], President of the Royal Society and to the Council | c. April 1836 |
| MM/21/80 | Charter, signed by the Duke of Sussex, President, Royal Society, giving John William Lubbock authority to deputise in the office of President of the Royal Society | 16 December 1830 |
| MS/123/21 | Letter from the Duke of Sussex to John George Children, Royal Society, Somerset House | 4 June 1835 |
| IM/000160 | Augustus Frederick, Duke of Sussex | nd |
| MDA/A/7/6 | Letter from Sir Henry Lyons, FRS, Fingest Grove, near High Wycombe, Bucks to Sir Henry Dale, PRS | 30 May 1942 |
| MS/123/4 | Letter from the Duke of Sussex to John George Children, British Museum, London | 4 November 1832 |
| MS/123/14 | Letter [possibly draft] from John George Children to the Duke of Sussex | 21 November 1832 |
| MS/123/6 | Incomplete letter from the Duke of Sussex to unknown recipient | 1830s |
| MS/123/8 | Letter from the Duke of Sussex to unknown recipient | 16 November 1832 |
| MS/123/12 | Letter from the Duke of Sussex to unknown recipient | 20 November 1832 |
| MS/123/9 | Letter from the Duke of Sussex to John George Children, British Museum, London | 19 November 1832 |
| MS/123/22 | Letter from George Biddell Airy to the Duke of Sussex | 2 June 1835 |
| MS/123/23 | Letter from the Duke of Sussex to John George Children | 18 June 1835 |
| MS/123/24 | Letter from the Duke of Sussex to John George Children, British Museum | 1830s |
| MS/123/5 | Letter from the Duke of Sussex to unknown recipient | 12 November 1832 |
| MS/123/15 | Letter from the Duke of Sussex to an unknown recipient | 23 November 1832 |
| MS/123/3 | Copy of letter from John George Children to John William Lubbock | 2 November 1832 |
| MC/2/276 | Letter from Richard Taylor, Red Lion Court, Fleet Street, to [Prince Augustus Frederick], the President of the Royal Society and to the Council | 8 February 1838 |
| MS/123/1 | Letter from the Duke of Sussex to John George Children | 29 October 1832 |
| MS/123/13 | Letter from John Herapath to the Duke of Sussex | 17 November 1832 |
| MS/123/20 | Draft letter from John George Children to the Duke of Sussex | 16 September 1834 |
| MS/123/2 | Letter from the Duke of Sussex to John George Children, British Museum, London | 30 October 1832 |
| MC/1/292 | Letter from [F.J. Robinson], Lord Goderich, Colonial Office, to Prince Augustus Frederick, [President of the Royal Society] | 17 March 1831 |
| MC/2/129 | Letter from John George Children, [Secretary of the Royal Society], to the Royal Society | 19 June 1834 |
| MC/2/264 | Letter from John Russell, Whitehall, to [Prince Augustus Frederick], the Duke of Sussex, the President of the Royal Society | 24 November 1837 |
| 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 |
| MC/1/299 | Letter from Edmund R. Daniell, [Secretary of the] Royal Institution, to [Prince Augustus Frederick], President of the Royal Society and to the Council | March 1831 |
| MS/426/34 | Copy letter from [John William] Lubbock, Treasurer of the Royal Society; to his Excellency, Baron [Alexander] von Humboldt | 19 January 1842 |
| MS/426/32 | Copy letter from [John William] Lubbock, Treasurer of the Royal Society; to his Excellency, the Chavalier | 14 January 1842 |
| MM/13/99 | Letter from the Treasury to the Duke of Sussex, President of the Royal Society | 13 November 1832 |
| MS/123/10 | Letter from J[osiah] Forshall to the Duke of Sussex | 12 November 1832 |
| MM/5/34 | Letter from Augustus Frederick, Duke of Sussex, St Asaph, to Pettigrew | 18 September 1830 |
| MM/12/34 | Letter from P M Roget, Bernard Street, to the Duke of Sussex | 27 November 1837 |
| MM/12/30 | Letter from Anthony Panizzi, British Museum, to Duke of Sussex | 4 November 1837 |
| DM/3/93 | Letter from John Barrow (for Admiralty), Admiralty Office, to the Duke of Sussex, President, Royal Society | 12 April 1831 |
| DM/2/28 | Letter from the Duke of Sussex, Kensington Palace, to Treasury | 17 April 1834 |
| DM/2/30 | Letter from the Duke of Sussex, Kensington Palace, GB Greenough | 17 April 1834 |
| MS/123/19 | Letter from the Duke of Sussex to John George Children, British Museum, Montague Street, London | 15 September 1834 |
| CMP/1/1 | Minutes of a meeting of Council of the Royal Society | 1 December 1832 |
| IM/000161 | Augustus Frederick, Duke of Sussex | 2001 |
| P/0128 | Portrait of Augustus Frederick; Duke of Sussex | 1830s |
| MC/2/101 | Letter from Prince Augustus Frederick, [Duke of Sussex], President of the Royal Society, Somerset House, to John William Lubbock, Treasurer of the Royal Society | 30 November 1833 |
| MC/1/280 | Letter from Dr. Peter Mark Roget, [Secretary of the] Royal Society, to Le Duc Duhamel | 21 January 1831 |
| MC/1/289 | Letter from John Augustus Lloyd, 19 [John] Adam Street, Adelphi, to [Prince Augustus Frederick], the Duke of Sussex, President of the Royal Society, | 15 March 1831 |
| MC/1/307 | Letter from James Henderson, 4 Whitehall, to [Prince Augustus Frederick], President of the Royal Society and to the Council | 27 May 1831 |
| MC/1/330 | Letter from Michael Joseph Quin, 17 Well Street, Falcon Square, St. Martin's-le-Grand, to [Prince Augustus Frederick], the Duke of Sussex, [President of the Royal Society] | 24 September 1831 |
| MC/1/337 | Letter from [William Frederick] Witherington, 29 Hadlow Street, Burton Crescent, to [Prince Augustus Frederick], President of the Royal Society and to the Council | 2 November 1831 |
| MC/2 | Volume 2 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1832-1838 |
| AP/10/45 | Unpublished letter, regarding 'A curious fact' from Ralph Hobson to the President of the Royal Society of Arts | 9 October 1833 |
| MC/2/24 | Letter from John [?] Herapath, 2 Upper Bedford Place, Kensington, to [Prince Augustus Frederick], President of the Royal Society | 12 February 1832 |
| MC/2/25 | Copy letter from John George Children, British Museum, to John Herapath | 14 February 1832 |
| MC/2/26 | Letter from John [?] Herapath, 2 Upper Bedford Place, Kensington, to [Prince Augustus Frederick], President of the Royal Society | 16 February 1832 |
| MC/2/27 | Copy letter from John George Children, British Museum, to John Herapath | 19 February 1832 |
| MC/2/35 | Copy letter from John George Children, Secretary of the Royal Society, to John Herapath | 13 April 1832 |
| MC/2/40 | Letter from James Gye, 3 Abingdon Street, Westminster, to the Council of the Royal Society | May 1832 |
| MC/2/49 | Letter from John Robison, [General] Secretary of the Royal Society Edinburgh, to the Duke of Sussex, [Prince Augustus Frederick], President of the Royal Society | 18 October 1832 |
| MC/2/64 | Letter from Henry Wheatley, [Keeper of the] Privy Purse, St James's Palace, to the Duke of Sussex, [Prince Augustus Frederick], President of the Royal Society | 30 November 1832 |
| MC/2/74 | Letter from Herbert Taylor, Windsor Castle, to the Duke of Sussex, [Prince Augustus Frederick], President of the Royal Society | 25 March 1833 |
| MC/2/118 | Letter from J.J. Ellis, Rectory, St Martin Outwich, to [Prince Augustus Frederick], Duke of Sussex, [President of the Royal Society] | 24 April 1834 |
| MC/2/192 | Letter from Henry Wheatley, [Keeper of the Privy Purse], St. James's Palace, to the [Duke of Sussex, President of the Royal Society] | 28 November 1835 |
| MC/2/194 | Letter from Prince Augustus Frederick, [the Duke of Sussex], President of the Royal Society, Kensington Palace, to the Fellows of the Royal Society | 10 December 1835 |
| MC/2/216 | Letter from Rev. Adam Browne, Kensington Palace, to the Fellows of the Royal Society | 18 June 1836 |
| 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 |
| MC/2/275 | Letter from E.J. Yates, Albany Terrace, Staffordshire Potteries, Hanley, to [Prince Augustus Frederick], the President of the Royal Society | 3 February 1838 |
| MC/2/279 | Letter from George Newport to [Prince Augustus Frederick] the President of the Royal Society and to the Council | 7 March 1838 |
| MC/2/307 | Letter from Henry Barnett, 6 Breams Buildings, Chancery Lane, to [Prince Augustus Frederick, Duke of Sussex], President of the Royal Society | 29 November 1838 |
| MC/2/297 | Letter from Prince Augustus Frederick, [the Duke of Sussex, President of the Royal Society], Kensington Palace, to the Royal Society | 19 August 1838 |
| MC/2/292 | Letter from Dr. [Giuseppe] Belluomini, 9 Great Marlborough Street, to [Prince Augustus Frederick,] the Duke of Sussex, [President of the Royal Society] | 15 July 1838 |
| MC/2/239 | Letter from John [Laurens] Bicknell, Abingdon Street, to [Prince Augustus Frederick], the President of the Royal Society and to the Council | 6 February 1837 |
| MC/1 | Volume 1 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1800-1831 |
| AP/8/16/1 | Unpublished manuscript, 'Théorême de Leonelli' by Z [Zecchini] Leonelli | 15 May 1831 |
| AP/8/16/2 | Unpublished diagram, sections of a circle by Z [Zecchini] Leonelli | 15 May 1831 |
| AP/8/18/2 | Unpublished diagram, angular compass by Z [Zecchini] Leonelli | 13 August 1831 |
| AP/8/17/2 | Unpublished drawing, compensation pendulum by Zecchini Leonelli | 13 August 1831 |
| AP/8/17/1 | Unpublished manuscript, 'Description d'un nouveau pendule à compensation qu'on peut adapter aux horloges de clochers, aussi bien qu'aux plus petites pendules' ['Description of a new compensation pendulum that can be adapted to bell tower clocks as well as to the smallest clocks'] by Zecchini Leonelli | 13 August 1831 |
| AP/8/18/1 | Unpublished manuscript, 'Boussole angulaire de Leonelli' ['Leonelli's angular compass'] by Z [Zecchini] Leonelli | 13 August 1831 |
| AP/8/18/3 | Unpublished letter, regarding papers submitted to the Royal Society from Z [Zecchini] Leonelli to the Duke of Sussex [Augustus Frederick] | 24 August 1831 |
| AP/8/18 | Unpublished paper and letter, 'Boussole angulaire de Leonelli' ['Leonelli's angular compass'] by Z [Zecchini] Leonelli | 13 August 1831 |
| AP/10/31/2 | Unpublished drawings, views of cards and tube by John Bates | 1 October 1833 |
| AP/10/31/1 | Unpublished manuscript, regarding 'A curious fact' from John Bates to the President of the Royal Society | 1 October 1833 |
| AP/10/39 | Unpublished letter, regarding 'A curious fact' from George Canning Huson to the President of the Royal Society | 21 September 1833 |
| AP/16/7 | Unpublished letters, regarding a cure for cholera morbus from B E De Berca | November 1831 |
| AP/16/15 | Unpublished paper, 'The quadrature of the globe, and consequently of time' by J G [John George] Hartley | 3 May 1831 |
| AP/15/21/2 | Unpublished diagram, plane of the meridian by [Thomas Kerigan] | 28 January 1832 |
| AP/8/16 | Unpublished paper, 'Théorême de Leonelli' by Z [Zecchini] Leonelli | 15 May 1831 |
| AP/15/21/1 | Unpublished manuscript, 'A method of deducing the longitude from the moon's right ascension' by Thos [Thomas] Kerigan | 28 January 1832 |
| AP/16/30 | Unpublished paper, 'The quadrature of the circle' by James Ryan | 11 September 1831 |
| AP/16/15/2 | Unpublished letter, 'The quadrature of the globe, and consequently of time' from John George Hartley to the Duke of Sussex | 3 May 1831 |
| AP/16/7/2 | Unpublished letter, regarding a cure for cholera morbus from B E De Berca to the Duke of Sussex | 24 November 1831 |
| AP/26/19 | Unpublished letter, 'New history of magnetism' from G P [Georg Philip] Uhthoff to the Duke of Sussex | 29 March 1843 |
| AP/15/21 | Unpublished paper, 'A method of deducing the longitude from the moon's right ascension' by Thos [Thomas] Kerigan | 28 January 1832 |
| AP/8/15 | Unpublished paper, 'Nouvelle méthode de tirer les racines numériques' ['New method for finding digital roots'] by Zecchini Leonelli | 13 August 1831 |
| AP/8/17 | Unpublished paper, 'Description d'un nouveau pendule à compensation qu'on peut adapter aux horloges de clochers, aussi bien qu'aux plus petites pendules' ['Description of a new compensation pendulum that can be adapted to bell tower clocks as well as to the smallest clocks'] by Zecchini Leonelli | 13 August 1831 |
| AP/10/31 | Unpublished letter, regarding 'A curious fact' from John Bates to the President of the Royal Society | 1 October 1833 |
| AP/10/40 | Unpublished letter, regarding 'A curious fact' from Peter Smyth to the President of the Royal Society | 24 September 1833 |
| AP/20/8 | Unpublished letter, 'Report upon a letter addressed by the Baron de Humboldt to HRH the President of the Royal Society and communicated by HRH to the Council' from S [Samuel] Hunter Christie and G B [George Biddell] Airy to the President of the Royal Society | 9 June 1836 |