Colonel J. (John) Victor Dallin (1897-1991) was an aviator and photographer who founded the Dallin Aerial Surveys Company in 1924. This small collection of films were shot by Dallin. There are five films, three are home movies, one is the reception for Charles Lindbergh in Philadelphia, and the fifth film contents is unidentified at this time.

Crawford Hallock Greenewalt (1902-1993) was a chemical engineer and the President of the DuPont Company 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. The bulk of the collection consists of nature films shot by Greenewalt, primarily of hummingbirds. The collection is divided into three series: Nature films, DuPont films and Sound recordings.

From 1802 to 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives by the duPont family business. The name also refers to the house and gardens on the hill above the mills, which was the first duPont family home in America. This collections contains slides and color snapshot photographs of the garden at Eleutherian Mills. Also included is an 8 mm. home movie.

The Films series contains a small number of films related to family trips and there are a few films related to Sperry Company inventions.

John McShain (1898-1989) was a Philadelphia and Washington, D.C.-based building contractor, whose firm, John McShain, Inc., was by 1950 the fifth largest construction firm in the United States. The collection contains graphic materials documenting John McShain's family life and personal interests, his career as a building contractor, and his involvement in horse racing.

The Larry J. Giacoletto papers are composed of videos, biographical information, schematics, and news clippings related to his research on transistors, and his employment at the David Sarnoff Research Center.

Fifty-two of Giacoletto's lab notebooks (1945-1956) can be found in Record group 26.

The Taylor-Wharton Iron & Steel Company produced frogs, switches and other railroad fittings including couplings, axles and wheels, as well as war material during both World Wars. The company was incorporated in 1912 as successor to the Taylor Iron & Steel Company. The collection contains photographs primarily of products such as dredging equipment, railroad tracks, rollers, crushers, and buckets. The films document dredge buckets in operation and were shot in the United States and at international locations. The collection has been organized into four series: Company history, Plant views, Products, and Films. Each series is arranged alphabetically.

Willard S. Wilson (1897-1979) was a pioneer radio broadcaster and entrepreneur. He was founder of the first commercial radio station in Delaware. This small collection of newspaper clippings, articles, notes, and ephemera document Wilson's knowledge about the history of radio and some of his accomplishments related to the radio station WHAV/WDEL. There are also three reels of film, two related to aviator Charles Lindbergh (1902-1974) and one documenting the arrival of a monument at Wilmington, Delaware marine terminal.

William Winder ‘Chick” Laird, Jr. (1910-1989) was a director of E. I. du Pont de Nemours and a financial advisor, starting his own brokerage firm in Wilmington, Delaware. This collection includes photographs of interiors and exteriors of du Pont family estates and homes in Delaware, as well as portraits and snapshots of du Pont and Laird family members. The collection also contains a large number of lantern slides, blueprints, maps, and film reels of home movies and family skits.