Ernst R. Habicht (1902-1987) was the general manager of E.I. du Pont de Nemours & Company's ammonia production plant at Belle, West Virginia. His papers include newspaper clippings, correspondence, a long memorandum, and a humorous poem by Habicht relating to the 1947-1948 strike at the Belle plant.

Eugene du Pont Jr. (1873-1954) was a director of the E.I. du Pont de Nemours & Company from 1917 until 1954, and a great grandson of company founder, Éleuthère Irénée du Pont (1771-1834). The collection contains the personal papers of Eugene du Pont, Jr., and the records of the Kinloch Gun Club, a private shooting club which he founded. It also contains a separate collection of correspondence between his brother Alfred I. du Pont, vice president and general manager of the DuPont Company, with his assistant Frank L. Connable, which is an important source for the history of the company in the early 1900s.