E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont Company. Established in 1802, the company began with the production of gunpowder. This collection consists of two copies of items, a letter and a receipt, from the DuPont Company to John Mason (1766-1849), superintendent of the Office of Indian Trade.

E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont Company. The company was established in 1802 by Pierre Samuel du Pont de Nemours (1739-1817) and his son Éleuthère Irénée du Pont (1771-1834) for the production of gunpowder. The papers in this collection date from the lifetime of E.I. du Pont and document important aspects of the early history of the DuPont Company.