Letter listing for 1740–1749
- Jean Jacques Rousseau to Louise Marie Madeleine Dupin de Chenonceaux [née Guillaume de Fontaine], 22 May 1749
- Jean Frédéric Phélypeaux, comte de Maurepas to Voltaire [François Marie Arouet], 24 May 1749
- Voltaire [François Marie Arouet] to Marie Louise Denis [née Mignot], 24 May 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. 25 May 1749
- Hilaire Rouillé, marquis Du Coudray to Voltaire [François Marie Arouet], 25 May 1749
- Voltaire sells his title at court, May 1749 by Louis XV, king of France and Louis Phélypeaux, duc de La Vrillière, 27 May 1749
- Contract to sell court title by Voltaire [François Marie Arouet] and Pierre Dufour, 27 May 1749
- Declaration about his sale of title by Voltaire [François Marie Arouet], 27 May 1749
- Pietro Ercole Gherardi to Lodovico Antonio Muratori, 31 May 1749
- Cardinal Fortunato Tamburini to Lodovico Antonio Muratori, 31 May 1749
- Voltaire [François Marie Arouet] to Denis Diderot, June 1749 [translation from French into English]
- Voltaire [François Marie Arouet] to Charles Augustin Feriol, comte d’Argental and Jeanne Grâce Bosc Du Bouchet, comtesse d’Argental, 3 June 1749
- Edward Young to Samuel Richardson, 4 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, 7 June 1749
- Pietro Ercole Gherardi to Lodovico Antonio Muratori, 7 June 1749