Letter listing for 1810–1819
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 2 March 1810
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Lady Margaret Williams, 5 March 1810
- Jacques Henri Bernardin de Saint-Pierre to André Basile Le Danois de la Soisière, 6 March 1810 [now missing]
- père André Morellet, abbé Morellet to Deuxième Classe de l’Institut, 14 March 1810
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 14 March 1810
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 20 March 1810
- Richard Brinsley Sheridan to Richard Peake, 20 March 1810
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Hester Maria Elphinstone, Viscountess Keith [née Thrale], 22 March 1810
- Richard Brinsley Sheridan to Hester Jane Sheridan [née Ogle], 28 March 1810
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 3 April 1810
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 11 April 1810
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Sir John Salusbury Piozzi Salusbury [née Piozzi], 14–15 April 1810
- Richard Brinsley Sheridan to Hester Jane Sheridan [née Ogle], 16 April 1810
- Richard Brinsley Sheridan to Richard Peake, 17 April 1810
- Richard Brinsley Sheridan to Hester Jane Sheridan [née Ogle], 20 April 1810