Letter listing for 1830–1839
- Charles Wentworth Dilke to Sir Roderick Impey Murchison, 3 October 1837
- Sir Roderick Impey Murchison to Charles Wentworth Dilke, 7 October 1837
- Clara Mary Jane Clairmont to Sir Percy Florence Shelley, 3rd baronet, 5 January 1838
- Clara Mary Jane Clairmont to Mary Wollstonecraft Shelley [née Godwin], 7 April 1838
- Clara Mary Jane Clairmont to Mary Wollstonecraft Shelley [née Godwin], 20 April 1838
- Prince Adolphus Frederick, 1st duke of Cambridge (4th creation) to Caroline Lucretia Herschel, 18 May 1838
- Sir John Frederick William Herschel, 1st baronet of Slough to Caroline Lucretia Herschel, 20 May 1838
- Sir Edward Sabine to John Phillips, 4 July 1838
- Sir Edward Sabine to Reverend Edward Maltby, bishop of Durham, 4 July 1838
- Edward Davies Davenport to Arthur Henry Davenport, 7 July 1838
- John Phillips to Reverend William Venables Vernon Harcourt, 7 July 1838
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 18 July 1838
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 28 July 1838
- Caroline Lucretia Herschel to Lady Margaret Brodie Herschel [née Stewart], 30 July 1838
- Reverend William Venables Vernon Harcourt to Sir Roderick Impey Murchison, 2 August 1838