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. There are some black and white negatives and slide transparencies, as well as two interviews on video discs (DVD). 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.

The collection is arranged into three series: DuPont Motors, Incorporated series, Indian Motorcycle Company series, and du Pont family history and other personal records series.

The DuPont Motors, Incorporated series is divided into two subseries: Publications, advertisements, and company images; and Administrative files.

The publications, advertisements, and company images subseries includes photographic prints of the various DuPont automobile models, automobile industry trade publications, and advertisements for the company provided through either DuPont Motors, Inc. or a local newspaper or magazine.

The administrative files subseries includes correspondence between E. Paul du Pont and his employees, the heads of other companies in the industry, and with law offices discussing the establishment of patents. The subseries also provides information regarding stockholders' events and the other du Pont businesses, including DuPont Motors Securities Company.

The Indian Motorcycle Company series is divided into two subseries: Publications, advertisements, and company images; and Administrative files.

The publications, advertisements, and company images subseries includes photographic prints of E. Paul du Pont with Indian Motorcycle products and snapshots of racers riding Indian Motorcycle vehicles. The subseries also includes motorcycle trade publications having to do directly with Indian Motorcycle Company or motorcycle innovation in general, and two video discs interviewing both Indian Motorcycle vehicle owners and Stephen du Pont.

The administrative files subseries includes extensive correspondence between E. Paul du Pont and his son Stephen du Pont (1915-2012) who became invested in the Indian Motorcycle Company. There are also several canceled checks paid to the order of Indian Motorcycle Company and progress reports addressed to the company during World War II regarding Indian Motorcycle's production rates. This subseries provides some information regarding the purchase of company stock between DuPont Motors, Inc. and Indian Motorcycle Company.

The du Pont family history and other personal records series encompass the textual and graphic materials having to do with the affairs of E. Paul du Pont, his wife, his children, and even his parents. The series includes various portraits and snapshots of E. Paul du Pont from childhood to adulthood, portraits of Francis Gurney du Pont and Eliza Wigfall Simons, personal letters between Jean Kane Foulke and her children after her husband's death, and images of the du Pont family property along the Brandywine River. There are also two handwritten journals that had belonged to E. Paul du Pont and some written pieces having to do with his upbringing.