Letter listing for 1740–1749
- Voltaire [François Marie Arouet] to Pierre Louis Moreau de Maupertuis, 7 July 1740
- Voltaire [François Marie Arouet] to Jan van Duren, 8 July 1740
- Thomas Gray to Philip Gray, 10 July 1740
- Voltaire [François Marie Arouet] to Jan van Duren, 10 July 1740
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], c. 10 July 1740
- Voltaire [François Marie Arouet] to Antoine de Feriol, comte de Pont-de-Veyle, 11 July 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 12 July 1740
- Lorenzo Brunassi, duca di San Filippo to Lodovico Antonio Muratori, 12 July 1740
- Voltaire [François Marie Arouet] to Charles Augustin Feriol, comte d’Argental, 12 July 1740
- Voltaire [François Marie Arouet] to père Bonaventure Moussinot, abbé Moussinot, 12 July 1740
- Filippo Argelati to Lodovico Antonio Muratori, 13 July 1740
- Edward Young to Judith Reynolds, 13 July 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 14 July 1740
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Frederick II, king of Prussia [the Great], 14 July 1740
- Lodovico Antonio Muratori to Francesco Brembati, conte Brembati, 14 July 1740