Letter listing for 1740–1749
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 25 February 1740
- Filippo Argelati to Lodovico Antonio Muratori, 25 February 1740
- Frederick II, king of Prussia [the Great] to Voltaire [François Marie Arouet], 26 February 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 27 February 1740
- Alexander Pope to Hugh Bethel, 29 February 1740
- Voltaire [François Marie Arouet] to Willem Jacob 's Gravesande, 29 February 1740
- Thomas Gray to Richard West [junior], March / April 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 1 March 1740
- Lorenzo Brunassi, duca di San Filippo to Lodovico Antonio Muratori, 1 March 1740
- Voltaire [François Marie Arouet] to Sir Everard Fawkener, 2 March 1740
- Voltaire [François Marie Arouet] to Sir Everard Fawkener, 2 March 1740
- Edward Young to Margaret Cavendish Bentinck, duchess of Portland [née Harley], 2 March 1740
- Filippo Argelati to Lodovico Antonio Muratori, 3 March 1740
- Françoise Paule Huguet de Graffigny [née d’Issembourg Du Buisson d’Happoncourt] to François Antoine Devaux, c. 4 March 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], 4 March 1740