Letter listing for 1740–1749
- Frederick II, king of Prussia [the Great] to Voltaire [François Marie Arouet], 10 June 1749
- Jeanne Grâce Bosc Du Bouchet, comtesse d’Argental to Charles Augustin Feriol, comte d’Argental, c. 10 June 1749
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Jean François de Saint-Lambert, marquis de Saint-Lambert, c. 10 June 1749
- Lodovico Antonio Muratori to Cardinal Fortunato Tamburini, 10 June 1749
- Voltaire [François Marie Arouet] to Denis Diderot, 10 June 1749
- Voltaire [François Marie Arouet] to Louise Marie Madeleine Dupin de Chenonceaux [née Guillaume de Fontaine], c. 10 June 1749
- Voltaire [François Marie Arouet] to Denis Diderot, 10 June 1749 [translation from French into English]
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Jean François de Saint-Lambert, marquis de Saint-Lambert, 11 June 1749
- Alessandro Chiappini to Lodovico Antonio Muratori, 11 June 1749
- Denis Diderot to Voltaire [François Marie Arouet], 11 June 1749
- William Melmoth [the younger] to Robert Dodsley, 12 June 1749
- Pietro Ercole Gherardi to Lodovico Antonio Muratori, 14 June 1749
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Jean François de Saint-Lambert, marquis de Saint-Lambert, 15 June 1749
- David Hume to Henry Home, Lord Kames, 15 June 1749
- Voltaire [François Marie Arouet] to Louise Marie Madeleine Dupin de Chenonceaux [née Guillaume de Fontaine], c. 15 June 1749