Letter listing for 1810–1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Ann Fellowes, 13 June 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to William Augustus Conway, 15–21 June 1819
- Alexander Mackenzie to Thomas Thain and Pierre Rastel de Rocheblave, 18 June 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to William Augustus Conway, 22–24 June 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 25 June 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Doctor Sir James Fellowes, 28 June 1819
- Frederick William Herschel to Caroline Lucretia Herschel, 4 July 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Doctor Sir James Fellowes, 6 July 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 7 July 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to John Williams, 14 July 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Penelope Sophia Pennington [née Weston], 15–22 July 1819
- John Austin to Jeremy Bentham, 20 July 1819
- James Mill to Jeremy Bentham, 24 July 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 24 July 1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Reverend Edward Mangin, 25 July 1819