Amelia Elizabeth du Pont (1796-1869) was a granddaughter of Pierre Samuel du Pont de Nemours (1739-1817) founder the E.I. du Pont de Nemours & Company, a chemical research, and manufacturing company. She was the eldest child of Victor Marie du Pont (1767-1827) and Gabrielle Josephine de la Fite de Pelleport (1770-1837). The collection contains a photocopy of the act of the Senate and House of Representatives of the State of Delaware by which Amelia Elizabeth du Pont's (1796-1869) marriage to Nathaniel Perkins, alias Nathaniel H. Clifford, was dissolved and a declaration that their child Gabrielle du Pont (1813-1891) was legitimate.

Francis Bannerman Son was a major purveyor of military goods to sportsmen and collectors in New York City over three generations. The collection consists of miscellaneous photographs, negatives, postcards and ephemera pertaining to the weapons and military memorabilia business run by Francis Bannerman and to Bannerman's philanthropic and leisure activities.

Rockland is an unincorporated old mill village in New Castle County, Delaware, and was later surrounded by du Pont family estates. The collection contains twelve edited oral history transcripts by Mary Laird Silvia (1938-2013) with people who lived in Rockland.

Thomas Lamb (1896-1988) was an industrial designer most noted for his design of physiologically efficient handles. His papers contain drawings, sketches, and artifacts pertaining to Lamb's career, which trace the development of his unique handle design, as well as his pursuits in the fields of textiles, cartoons, and writing, particularly for children.