This series primarily consists of letters from Pierre Samuel du Pont de Nemours to his son, Eleuthère. They document Victor du Pont's financial failure, du Pont de Nemours' services in various French governmental posts, difficulties with powder company shareholders, Bonaparte's animosity, publication of the Turgot papers, and financial troubles with Mme. Bureaux de Pusy. Letters addressed to Mme. Lavoisier refer to her mortgage on Bois-desfosses, the death of her estranged second husband, Count Rumford, and contemporary French politics and society. Letters to son, Victor, mention Pierre Samuel du Pont de Nemours' writings for Benjamin Franklin, Thomas Jefferson, and Comte de Moustier. Other corresponence refers to Pierre Samuel du Pont de Nemours print shop in Paris, his relationship with Lavoisier, his return to Paris in 1795, his desire to resume political activity, the evolution of the firm of Du Pont de Nemours, Père et Fils & Cie., and the du Pont de Nemours family's arrival in America.