Eleuthère Paul du Pont (1887-1950) was the founder of the luxury automobile company DuPont Motors, Incorporated in 1919. In 1930, E. Paul du Pont also became the president of the Indian Motorcycle Company in Springfield, Massachusetts. Throughout his life, E. Paul du Pont developed numerous patents and wrote articles for various trade publications in the automobile industry. DuPont Motors, Incorporated was a manufacturing company of luxury automobiles, founded by E. Paul du Pont in 1919 in Wilmington, Delaware. Indian Motorcycle Company is a manufacturer of a wide variety of motorcycles. In 1930, after selling DuPont Motors, Incorporated stock, E. Paul du Pont bought a large share of Indian Motorcycle Company stock and became the company president. This collection documents both the professional and personal history of Eleuthère Paul du Pont and his family. The material spans from the end of the nineteenth century through the twentieth century. The collection is predominantly textual material and photographic prints having to do with both DuPont Motors, Incorporated and Indian Motorcycle Company administrative and financial correspondence and advertising and publications. Besides business material, the collection includes personal letters between E. Paul du Pont and his siblings and children, and family snapshots and portraits usually taken at their home in Delaware.