HS/2/98 | Letter, from Charles Babbage to Sir John Herschel, dated at Devonshire St. | 10 November 1818 |
HS/2/100 | Letter, from Charles Babbage to Sir John Herschel, dated at Devonshire St. | 1 December 1818 |
HS/2/135 | Incomplete letter, from Charles Babbage to Sir John Herschel | 1 May 1820 |
HS/2/136 | Letter, from Charles Babbage to Sir John Herschel, dated at Devonshire St. | 22 May 1820 |
HS/2/156 | Letter, from Sir John Herschel to Charles Babbage, dated at Slough | 26 February 1821 |
HS/2/249 | Letter, from Sir John Herschel to Charles Babbage, dated at Slough | 24 March 1830 |
HS/2/250 | Draft letter, from Sir John Herschel to Charles Babbage, dated at Slough | 24 March 1830 |
HS/3/64 | Letter, from Francis Baily to Sir John Herschel, dated at 37 Tavistock Place | 1 April 1826 |
HS/3/65 | Letter, from Sir John Herschel to Francis Baily, dated at Slough | 2 April 1826 |
HS/7/160 | Draft letter, from Sir John Herschel to Fearon Fallows, dated at Downing St. | 10 November 1822 |
HS/7/161 | Letter, from Fearon Fallows to Sir John Herschel, dated at Cape Town | 16 March 1823 |
HS/7/176 | Draft letter, from Sir John Herschel to Michael Faraday, dated at Slough | 21 July 1828 |
HS/7/228 | Letter, from William Henry Fitton to Sir John Herschel, dated at 53 Upper Harley St. | 5 August 1828 |
HS/8/113 | Copy letter, from Sir John Herschel to Davies Gilbert, dated at Slough | 21 July 1828 |
HS/11/10 | Letter, from Henry Kater to Sir John Herschel, dated at York Gate | 18 July 1828 |
HS/15/2 | Letter, from Sir John Herschel to Edward Sabine | 3 April 1825 |
HS/15/3 | Letter, from Edward Sabine to Sir John Herschel, dated at Princes St. | 4 April 1825 |
HS/15/5 | Letter, from Edward Sabine to Sir John Herschel, dated at Princes St. | 1825-4 |
HS/15/6 | Copy letter, from Sir John Herschel to Edward Sabine | 8 April 1825 |
HS/15/9 | Letter, from Sir John Herschel to Edward Sabine | 20 June 1825 |