Letter listing for 1750–1759
- Voltaire sells government bonds, 1751 by Guillaume Claude de Laleu and M. — Giraut, 2 January 1751
- Voltaire [François Marie Arouet] to Charlotte Sophia van Aldenburg, countess of Bentinck, 2 January 1751
- Voltaire [François Marie Arouet] to Claude Étienne Darget, 2 January 1751
- Voltaire [François Marie Arouet] to Heinrich von Podewils, graf von Podewils and Karl Wilhelm Finck von Finckenstein, graf von Finckenstein, 2 January 1751
- Voltaire [François Marie Arouet] to Marie Louise Denis [née Mignot], 3 January 1751
- Marie Louise Denis [née Mignot] to père Pierre Robert Le Cornier de Cideville, abbé Cideville, 4 January 1751
- Heinrich von Podewils, graf von Podewils and Karl Wilhelm Finck von Finckenstein, graf von Finckenstein to Frederick II, king of Prussia [the Great], 4 January 1751
- Voltaire [François Marie Arouet] to Claude Étienne Darget, 4 January 1751
- Purchase of Coventry's History of Pompey the Little (1751) by Robert Dodsley and Francis Coventry, 5 January 1751
- Voltaire [François Marie Arouet] to Samuel von Cocceji, graf von Cocceji, 5 January 1751
- Voltaire [François Marie Arouet] to Friedrich Wilhelm von Marschall, baron von Marschall, 5 January 1751
- Sophia Friderika Wilhelmina von Preussen, margravine of Bayreuth to Voltaire [François Marie Arouet], 6 January 1751
- Voltaire [François Marie Arouet] to Sophia Friderika Wilhelmina von Preussen, margravine of Bayreuth, 6 January 1751
- Voltaire [François Marie Arouet] to Charles Augustin Feriol, comte d’Argental and Jeanne Grâce Bosc Du Bouchet, comtesse d’Argental, 9 January 1751
- Adam Smith to Robert Simson, 10 January 1751