Letter listing for 1770–1779
- David Hume to William Mure, Baron Mure of Glanderston and Caldwell, 2 October 1770
- Voltaire [François Marie Arouet] to Catherine II, czarina of Russia [the Great], 2 October 1770
- Wills Hill, 1st earl of Hillsborough to Norborne Berkeley, 4th Baron Botetourt, 3 October 1770
- Henri Nicolas Latran to François Antoine Devaux, 4 October 1770
- Laurent Angliviel de La Beaumelle to Charles Manoël de Végobre, 5 October 1770
- Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy] to Voltaire [François Marie Arouet], 5 October 1770
- Marie Anne de Vichy-Chamrond, marquise Du Deffand [née de Vichy] to Voltaire [François Marie Arouet], 5 October 1770
- Voltaire [François Marie Arouet] to Louise Honorine Crozat Du Châtel, duchesse de Choiseul [née Crozat], 5 October 1770
- Voltaire [François Marie Arouet] to Charles Henry Chrétien Rosé, 5 October 1770
- Voltaire [François Marie Arouet] to Gottlob Louis von Schönberg, Reichsgraf von Schönberg, 5 October 1770
- George Washington to Norborne Berkeley, 4th Baron Botetourt, 5 October 1770
- James Boswell to William Johnston Temple, 6 October 1770
- Voltaire [François Marie Arouet] and Marie Louise Denis [née Mignot] to Louis Gaspard Fabry, 6 October 1770
- Voltaire [François Marie Arouet] to Gaspard Henry Schérer, 6 October 1770
- Voltaire [François Marie Arouet] to Marc Antoine René de Voyer de Paulmy, marquis de Paulmy & de Voyer, 6 October 1770