The American Leather Belting Association (ALBA) (now the National Industrial Leather Association) is a trade organization for distributors, fabricators, and manufacturers of leather belting, conveyor belting, and flat power transmission belting. The records of ALBA include meeting minutes of the board of directors from 1937 to 1947 and the association's certificate of incorporation, charter, and by-laws. There are meeting minutes and sales reports from two membership divisions: the Textile Leather Division and the Mechanical Leather Packing Division.

Charles Lee Reese, Sr. (1862-1940) was a chemist and scientist at the E. I. du Pont de Nemours & Company from 1902 to 1931. The Charles L. Reese papers are a group of material from his student days, the texts of lectures and articles, biographical materials and genealogical notes.

Crawford H. Greenewalt (1902-1993) was an executive with the DuPont Company and president of the firm from 1948 to 1962. He had a passion for the natural sciences, and combined his love of ornithology with photography. He was especially known for his high-speed photographs of hummingbirds. His ornithological interests included bird songs, the radiance of hummingbird feathers, and the evolution of shapes and sizes of birds in relation to their flight abilities. Greenewalt's personal papers are primarily focused on his retirement years and his avocational interests. The papers document Greenewalt's political activities in the Republican National Committee and include exchanges with many of the leading political and business figures of the day. Of particular significance are the papers describing Greenewalt's work in photography and ornithology, beginning in 1948. These materials trace his research interests in the hummingbird and bird flight and his trips to places like Brazil, Peru, Venezuela, the Antilles, New Guinea, and the Galapagos Islands in order to observe and photograph birds in their natural habitats. Other files describe Greenewalt's work on the visiting committee at the Massachusetts Institute of Technology (1965-1987), which evaluated the school's academic programs.

Elva M. Chandler (1900-1990) was an active clubwoman, active in many women's professional, church, and political organizations and president of the local Business and Professional Women's Club. She was best known for her involvement in the Delaware Federation of Business and Professional Women's Clubs (BPWC) and belonged to the Christina branch. Chandler's papers document her role in business and professional women's organizations and the changing role of women in business life from the 1950s to the 1970s.

Herman Schroeder joined the DuPont Company's Chemical Department in 1938 and held various positions at the Organic Chemistry Department at Jackson Laboratory and the Elastomer Chemicals Department. This collection consists primarily of materials related to Schroeder's professional activities after his retirement from the DuPont Company in 1980.

James Porter Baughman (1936-) was a professor of business history at the Harvard Business School and later served as director of Crotonville, The General Electric Company's management development institute in Ossining, New York. He also consulted for numerous private and public firms. His papers describe the successful career of a renowned business manager, lecturer, consultant, and world wide resource for developing future business management practices in the late twentieth and early twenty-first centuries.

Mildred I. McCormick (1911-1993) was president of the Business Professional Women's Club, Wilmington, Delaware, in 1973-1974, and an executive secretary at Hewlett-Packard Corporation. The collection contains miscellaneous items from the Business and Professional Women's Club of Wilmington, Delaware (BPWC).

Richard Hollerith, Jr. (1926-), spent his professional career working as an industrial designer of office products, computers, printers, office space, and household products. His papers include correspondence, meeting minutes, conference and working group reports, and blueprints reflecting his work as a designer and as an advocate of universal design and barrier-free environments.

Stephanie Louise Kwolek (1923-2014) was an American chemist known for inventing Kevlar. She worked for the DuPont Company for forty years. Kwolek's main area of research was polymers, including high-performance fibers. This collection contains photographs, albums, slides and videotapes related to Kwolek's career and achievements, including her work on Kevlar.