Letter listing for 1830–1839
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 6 April 1839
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 12 April 1839
- John Phillips to Reverend William Venables Vernon Harcourt, 20 April 1839
- Reverend William Venables Vernon Harcourt to Sir Roderick Impey Murchison, 21 April 1839
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 26 April 1839
- John Phillips to Reverend William Venables Vernon Harcourt, 27 April 1839
- Reverend George Peacock to Sir Roderick Impey Murchison, May 1839
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 4 May 1839
- Sir William Jackson Hooker to Sir Roderick Impey Murchison, 5 May 1839
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 6 May 1839
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 11 May 1839
- Sir Roderick Impey Murchison to John Campbell, 2nd marquess of Breadalbane, 11 May–20 July 1839
- John Phillips to Reverend William Venables Vernon Harcourt, 12 June 1839
- Sir Roderick Impey Murchison to Reverend William Venables Vernon Harcourt, 21 July 1839
- John Phillips to Reverend William Venables Vernon Harcourt, 22 July 1839