Letter listing for 1770–1779
- Jeremy Bentham to Richard Clark, 8 October 1770
- Voltaire [François Marie Arouet] to Louise Honorine Crozat Du Châtel, duchesse de Choiseul [née Crozat], 8 October 1770
- Voltaire [François Marie Arouet] to Maréchal Louis François Armand de Vignerot du Plessis, 3rd duc de Richelieu, 8 October 1770
- Voltaire [François Marie Arouet] to Friedrich Melchior Grimm, baron von Grimm, 10 October 1770
- Voltaire [François Marie Arouet] to Gabriel Cramer, c. 10 October 1770
- Voltaire [François Marie Arouet] to Marie Jean Antoine Nicolas de Caritat, marquis de Condorcet and Jean Le Rond d’Alembert, 11 October 1770
- Voltaire [François Marie Arouet] to Louis Gaspard Fabry, 11 October 1770
- Gustavus III, king of Sweden to Charles XIII, king of Sweden, 12 October 1770
- William Constable to Jean Jacques Rousseau, 12 October 1770
- Voltaire [François Marie Arouet] to Marc Antoine René de Voyer de Paulmy, marquis de Paulmy & de Voyer, 12 October 1770
- Voltaire [François Marie Arouet] to Catherine II, czarina of Russia [the Great], 12 October 1770
- Voltaire [François Marie Arouet] to Frederick II, king of Prussia [the Great], 12 October 1770
- Voltaire [François Marie Arouet] to Jacques de Rochefort d’Ally, chevalier de Rochefort d’Ally, 12 October 1770
- Voltaire [François Marie Arouet] to Jean François René Tabareau and Joseph Vasselier, 12 October 1770
- Richard Brinsley Sheridan to Elizabeth Angelo [née Johnson], 13 October 1770