Letter listing for 1740–1749
- Voltaire buys a government annuity, May 1749 by Louis Basile de Bernage, 5 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. 5 May 1749
- Philip Dormer Stanhope, 4th earl of Chesterfield to Solomon Dayrolles, 5 May 1749
- Thomas Gray to Doctor Thomas Wharton, 6 May 1749
- Voltaire buys a debt owing to Mme Godemel de Bourdeiller, May 1749 by Guillaume Claude de Laleu and M. — Giraut, 7 May 1749
- Voltaire [François Marie Arouet] to Johann Bernoulli II, 9 May 1749
- Gabrielle Émilie de Châtelet-Lomont d’Haraucourt, marquise Du Châtelet-Lomont [née Le Tonnelier de Breteuil] to Marie Françoise Catherine de Boufflers, marquise de Boufflers-Remiencourt [née de Beauvau-Craon], 10 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, 11 May 1749
- Charles Julius Bertram to William Stukeley, 12 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. 15 May 1749
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], 15 May 1749
- Voltaire [François Marie Arouet] to Michel Lambert, 15 May 1749
- Frederick II, king of Prussia [the Great] to Voltaire [François Marie Arouet], 16 May 1749
- Arthur Murphy to Jane Murphy [née French], 16 May 1749
- Voltaire [François Marie Arouet] to Jean Baptiste Machault d’Arnouville, 16 May 1749
