Letter listing for 1780–1789
- Jean Balthazar d'Adhemar to Armand Marc de Montmorin-Saint-Herem, comte de Montmorin, Spring 1787
- Caroline Stéphanie Félicité de Genlis, comtesse de Genlis [née du Crest de Saint-Aubin] to Jacques Henri Bernardin de Saint-Pierre, May 1787
- père André Morellet, abbé Morellet to Joseph Mathias Gérard de Rayneval, May 1787
- The Massachusetts Centinel publishes excerpts of a letter by Doctor Richard Price for William Bingham, May–June 1787 [an excerpt]
- Richard Brinsley Sheridan to William Pitt [the younger], 3 May 1787
- Richard Brinsley Sheridan to William Pitt [the younger], 3 May 1787
- Nicolas Ruault to Jacques Gilbert de La Hogue, 4 May 1787
- François Mesnard de Conichard to Jacques Henri Bernardin de Saint-Pierre, 4 May 1787
- Edmund Pendleton to Oliver Towles, 4 May 1787
- Richard Brinsley Sheridan to William Pitt [the younger], 4 May 1787
- père André Morellet, abbé Morellet to William Petty, 1st marquess of Lansdowne [2nd earl of Shelburne], c. 7 May 1787
- Corilla Olimpica [Maria Maddelena Morelli Fernandez] to Giovanni Cristofano Amaduzzi, 7 May 1787
- Samuel de Tournes to Paul Claude Moultou, 8 May 1787
- Jean Baptiste Gellée de Prémion to Jacques Henri Bernardin de Saint-Pierre, 8 May 1787
- Pierre Charles Louis Laurent de Villedeuil, 2nd marquis de Villedeuil to Jacques Henri Bernardin de Saint-Pierre, 9 May 1787
