Letter listing for 1750–1759
- M. — Du Bettier to François Coindet, 28 May 1750
- Claude Adrien Helvétius to [unknown], 30 May 1750
- François Thomas Marie de Baculard d’Arnaud to Voltaire [François Marie Arouet], 31 May 1750
- Voltaire [François Marie Arouet] to François de Chennevières, May / June 1750
- William Cowper to Chase Price, c. 1 June 1750
- Voltaire [François Marie Arouet] to Flaminio Scarselli, 1 June 1750
- Voltaire [François Marie Arouet] to William Owen, 3 June 1750
- Philip Dormer Stanhope, 4th earl of Chesterfield to Solomon Dayrolles, 5 June 1750
- Voltaire [François Marie Arouet] to Anne Louise Bénédicte de Bourbon, duchesse Du Maine [née de Bourbon-Condé], 7 June 1750
- Voltaire [François Marie Arouet] to Johann Peter von Räsfeld, c. 8 June 1750
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], 9 June 1750
- Voltaire [François Marie Arouet] to Marie Françoise de Maniban, marquise de Malause, c. 10 June 1750
- Samuel Richardson to Susanna Duncombe [née Highmore], 15 June 1750
- Voltaire [François Marie Arouet] to Anne Louise Bénédicte de Bourbon, duchesse Du Maine [née de Bourbon-Condé], 15 June 1750
- Voltaire [François Marie Arouet] to Anne Louise Bénédicte de Bourbon, duchesse Du Maine [née de Bourbon-Condé], 20 June 1750