Letter listing for 1800–1809
- Richard Brinsley Sheridan to Richard Peake, 24 December 1804
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Lady Margaret Williams, 29 December 1804
- père André Morellet, abbé Morellet to Pierre Louis Roederer, comte Roederer, 30 December 1804
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Hester Maria Elphinstone, Viscountess Keith [née Thrale], 31 December 1804
- Richard Brinsley Sheridan to Richard Peake, 1804
- Richard Brinsley Sheridan to Richard Peake, 1804
- Richard Brinsley Sheridan to Samuel Whitbread, c. 31 December 1804
- Elizabeth Harvey to Jacques Henri Bernardin de Saint-Pierre, c. 1805
- Louis François Elisabeth Ramond de Carbonnières to Jacques Henri Bernardin de Saint-Pierre, c. 1805
- [unknown] to Jacques Henri Bernardin de Saint-Pierre, 1805–1814
- Jane Austen to Cassandra Elizabeth Austen, 1805
- Jacques Henri Bernardin de Saint-Pierre to Marguerite Charlotte Désirée de Saint-Pierre [née de Pelleporc], 1805
- Jacques Henri Bernardin de Saint-Pierre to Mme — Grivet, 1805
- Jacques Henri Bernardin de Saint-Pierre to Marguerite Charlotte Désirée de Saint-Pierre [née de Pelleporc], 1805
- Jacques Henri Bernardin de Saint-Pierre to Marguerite Charlotte Désirée de Saint-Pierre [née de Pelleporc], 1805