Arnold M. Kneitel (1923-2012) worked in the Film Department of E.I. du Pont de Nemours & Company, specializing in marketing research for Mylar polyester film. His papers are related to his career he preserved at home and include ephemera relating to the marketing of Mylar and papers on office management information systems and the early years of word processing, among other items.

Donald Fell Carpenter (1899-1985) was general manager of the Film Department at the DuPont Company. He graduated from the Massachusetts Institute of Technology (MIT) with a degree in engineering in 1922. Between 1927 and 1933 he held increasingly important managerial positions with the DuPont Viscoloid Company, and between 1933 and 1948 with the Remington Arms Company. In 1947 to 1948 he was a member of the Industrial Advisory Group to the U.S. Atomic Energy Commission. Broadly speaking, the materials in this small collection of his papers cover Carpenter's entire career, from his senior thesis at MIT (the design for an addition to his father's tinsmithing shop) to his involvement with political and civic affairs during his retirement.

Donald Fell Carpenter (1899-1985) was General Manager of the Film Department at the DuPont Company. The collection consists of photographs, newspaper clippings, pamphlets and a few letters relating to Donald Carpenter's personal life and career.