Letter listing for 1770–1779
- Catherine II, czarina of Russia [the Great] to Voltaire [François Marie Arouet], 20 January 1775
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], c. 20 January 1775
- Voltaire [François Marie Arouet] to Louis Alexandre de La Rochefoucauld, duc de La Rochefoucauld, c. 20 January 1775
- père André Morellet, abbé Morellet to Jean Charles Philibert Trudaine de Montigny, 21 January 1775
- Voltaire [François Marie Arouet] to Jean Le Rond d’Alembert and Marie Jean Antoine Nicolas de Caritat, marquis de Condorcet, 21 January 1775
- Voltaire [François Marie Arouet] to Jacques Vincent Delacroix [the younger], 21 January 1775
- Voltaire [François Marie Arouet] to Charles Augustin Feriol, comte d’Argental, 22 January 1775
- Voltaire [François Marie Arouet] to Jean Pierre de Claris, chevalier de Florian, 22 January 1775
- Voltaire [François Marie Arouet] to Louise Suzanne Gallatin [née Vaudenet], 22 January 1775
- Voltaire [François Marie Arouet] to Anne Robert Jacques Turgot, baron de l’Aulne, 22 January 1775
- Jacques Henri Bernardin de Saint-Pierre to [unknown], 23 January 1775
- père André Morellet, abbé Morellet to Jean Charles Philibert Trudaine de Montigny, 25 January 1775
- père André Morellet, abbé Morellet to Pierre Bruyard, 25 January 1775
- Mme Denis acquires church lands, January 1775 by Pierre François Nicod, 25 January 1775
- Voltaire [François Marie Arouet] to Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy], 25 January 1775
