| RefNo | Title | Date |
| M/089 | Gauss, Carl Friedrich | 1855 |
| MM/11/178 | Letter from Edward Sabine, Woolwich, to G B Airy | 1 April 1842 |
| EC/1803/13 | Gauss, Karl Friedrich: certificate of election to the Royal Society | |
| L&P/12/101 | Letter, 'The elements of Ceres and Pallas' from Carl Friedrich Gauss to Nevil Maskelyne | 2 April 1805 |
| IM/001621 | Gauss, Karl Freidrich | nd |
| MS/581/33 | Letter to C F Gauss | 19 April 1804 |
| MC/3 | Volume 3 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1839-1843 |
| MC/3/46 | Copy letter from Captain Edward Sabine, Elberfelt, to Baron von Humboldt | 24 October 1839 |
| AP/7/12/3 | Unpublished letter, on Pallas observations from [Heinrich Wilhelm Matthias] Olbers to Schroeter [Johann Hieronymus Schroter] | 7 May 1802 |
| AP/2/7 | Translation of abstract, ['Intensitas vis magneticæ terrestris ad mensuram absolutam revocata'] by [Karl Friedrich] Gauss | [1832] |
| HS/19/6 | Summaries of letters from Sir John Frederick William Herschel and Karl Gauss | 1821-1825 |
| HS/20/95 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Slough | 9 May 1820 |
| HS/8/75 | Letter, from Carl F. Gauss to Caroline Lucretia Herschel, dated at Göttingen | 12 April 1833 |
| HS/8/74 | Letter, from Carl Friedrich Gauss to Sir John Herschel, dated at Göttingen | 31 October 1828 |
| HS/8/77 | Letter, from Carl Friedrich Gauss to Sir John Herschel, dated at Göttingen | 7 May 1839 |
| HS/8/78 | Letter, from Carl Friedrich Gauss to Sir John Herschel, dated at Göttingen | 24 October 1842 |
| HS/25/6/12 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Collingwood | 4 September 1842 |
| HS/21/133 | Copy letter, from Caroline Lucretia Herschel to Carl Friedrich Gauss, dated at Kramer Strasse, Hanover | 3 April 1833 |
| HS/20/221 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at 56 Devonshire St. | 3 August 1825 |
| HS/8/73 | Letter, from Carl Friedrich Gauss to Sir John Herschel, dated at Göttingen | 10 November 1821 |
| HS/21/46 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Slough | 27 April 1829 |
| HS/20/98 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Slough | 12 July 1820 |
| HS/20/117 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at London | 9 May 1821 |
| HS/21/112 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Hanover | 19 June 1832 |
| HS/21/271 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Slough | 3 December 1838 |
| HS/22/17 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Slough | 17 June 1839 |
| HS/22/228 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Collingwood | 10 April 1845 |
| HS/8/72 | Draft letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Slough | 11 February 1821 |
| HS/8/76 | Letter, from Carl Friedrich Gauss to Sir John Herschel, dated at Göttingen | 31 March 1839 |
| HS/20/111 | Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Slough | 11 February 1821 |