Letter listing for 1750–1759
- Voltaire [François Marie Arouet] to Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy], 20 July 1751
- Voltaire [François Marie Arouet] to Charlotte Sophia van Aldenburg, countess of Bentinck, c. 20 July 1751
- Samuel Richardson to Hester Chapone [née Mulso], 22 July 1751
- Louisa Ulrica, queen of Sweden to Voltaire [François Marie Arouet], 23 July 1751
- Antoine Saladin to Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy], 24 July 1751
- Philip Dormer Stanhope, 4th earl of Chesterfield to Philip Stanhope, 26 July 1751
- Voltaire [François Marie Arouet] to Sir Everard Fawkener, 27 July 1751
- Charles Jean François Hénault to Voltaire [François Marie Arouet], 28 July 1751
- Frederick II, king of Prussia [the Great] to Voltaire [François Marie Arouet], July / August 1751
- Marie Louise Denis [née Mignot] to père Pierre Robert Le Cornier de Cideville, abbé Cideville, 31 July 1751
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], July / August 1751
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], July / August 1751
- Reverend Doctor Joseph Warton to Thomas Warton, before August 1751
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], c. 1 August 1751
- Voltaire [François Marie Arouet] to Richard Rolt, 3 August 1751