Letter listing for 1770–1779
- Les copies de Rousseau by Claude Eymar, c. 1774
- Thomas Reid to Henry Home, Lord Kames, 1774
- Jean Jacques Rousseau to Guillaume Olivier de Corancez, 1774
- Rousseau et Don Yriarte by Jean Jacques Rousseau and Charles Yriarte, c. 1774
- Dugald Stewart to Thomas Reid, 1774 / 1775
- Thomas Warton to Henry Penruddocke Wyndham, January–March 1774
- padre Ferdinando Galiani, abbé Galiani to Louise Florence Pétronille La Live, marquise d’Épinay [née Tardieu d'Esclavelles], 1 January 1774
- Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy] to Horace Walpole, 4th earl of Orford, 1 January 1774
- Voltaire [François Marie Arouet] to Giuseppe Maria Galanti, 1 January 1774
- Jean Jacques Rousseau to Mme Marie Antoinette Duchesne [née Cailleau], 2 January 1774 [now missing]
- Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy] to Voltaire [François Marie Arouet], 3 January 1774
- Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy] to Voltaire [François Marie Arouet], 3 January 1774
- Voltaire [François Marie Arouet] to Charles Frédéric Gabriel Christin, 3 January 1774
- Voltaire [François Marie Arouet] to Philippe Antoine de Claris, marquis de Florian, 3 January 1774
- Voltaire [François Marie Arouet] to Gaspard Henry Schérer, 3 January 1774
