Letter listing for 1740–1749
- Voltaire [François Marie Arouet] to Jeanne Françoise Quinault, 16 February 1740
- Edward Young to Margaret Cavendish Bentinck, duchess of Portland [née Harley], 16 / 23 February 1740
- Voltaire [François Marie Arouet] to Jeanne Françoise Quinault, 17 February 1740
- Voltaire [François Marie Arouet] to Jean Baptiste François Durey de Mesnières, 18 February 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 19 February 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 20 February 1740
- Ridolfino Venuti, abate Venuti to Lodovico Antonio Muratori, 21 February 1740
- Voltaire [François Marie Arouet] to François Thomas Marie de Baculard d’Arnaud, 21 February 1740
- Voltaire [François Marie Arouet] to père Bonaventure Moussinot, abbé Moussinot, 21 February 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 22 February 1740
- Voltaire [François Marie Arouet] to Antoine de Feriol, comte de Pont-de-Veyle, 23 February 1740
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], 23 February 1740
- Voltaire [François Marie Arouet] to Jeanne Françoise Quinault, 23 February 1740
- Voltaire [François Marie Arouet] to Charles Augustin Feriol, comte d’Argental, 23 February 1740
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Johann Bernoulli, 24 February 1740