Letter listing for 1800–1809
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Margaret Owen, 6 May 1805
- Pierre Étienne Louis Dumont to Jeremy Bentham, 7 May 1805
- Jacques Henri Bernardin de Saint-Pierre to Pierre Marie Claude Robin, 7 May 1805
- Adam Ferguson to Sir John Macpherson, Baronet Macpherson of Calcutta and Lauriston, 13 May 1805
- père André Morellet, abbé Morellet to Antoine Portal, Baron Portal, 13 May 1805
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Isabella Hamilton, 13 May 1805
- Jacques Henri Bernardin de Saint-Pierre to [unknown], 13 May 1805 [now missing]
- Jacques Henri Bernardin de Saint-Pierre to Jacques Simon Merlin, 17 May 1805 [now missing]
- Jacques Henri Bernardin de Saint-Pierre to André Basile Le Danois de la Soisière, 18 May 1805
- père André Morellet, abbé Morellet to Laurent François Feuillet, 20 May 1805
- Jacques Henri Bernardin de Saint-Pierre to Pierre Marie Claude Robin, 21 May 1805
- Hester Lynch Piozzi [formerly Mrs Thrale; née Salusbury] to Reverend Leonard Chappelow, 23 May 1805
- père André Morellet, abbé Morellet to Maria Edgeworth, 25 May 1805
- Jacques Henri Bernardin de Saint-Pierre to [unknown], 28 May 1805
- Jacques Henri Bernardin de Saint-Pierre to Marguerite Charlotte Désirée de Saint-Pierre [née de Pelleporc], 31 May 1805