The E.I. du Pont de Nemours Niagara Plant produces a number of specialty chemicals, such as polymer acetates, sodium cyanide, and methyl chloride; the plant was purchased by the DuPont Company in 1930. This small collection of Niagara Plant historical files consists of plant histories, photographs, biographical information on personnel, drawings of plant buildings, and some artifacts.

The DuPont Experimental Station is a large industrial research facility founded in 1903; focused on chemistry research. This collection consists primarily of group photographs of new employees in the Central Research Department at DuPont's Experimental Station in Wilmington, Delaware for the years 1922 to 1959. All individuals pictured are identified.

Herny S. Rothrock (1906-1986) was a DuPont research chemist. In 1930, he joined the staff of the Experimental Station of E.I. du Pont de Nemours & Company. He obtained fifty-six patents, chiefly in the field of polymer chemistry and served ten years at liaison manager in the Central Research Department, retiring in 1971. This collection consists primarily of photos relating to DuPont's Experimental Station in Wilmington, Delaware. There are group photos of new employees in the Central Research Department, committees and conferences and press release photos from the 1964 New York World's Fair.

John Oscar Skiles (1895-1960) was a longtime employee of Bethlehem Steel Corporation, where he worked as an analyst in the Metallurgical Department of the company's Sparrows Point, Maryland, plant, beginning in the 1920s until his retirement in 1960. This small collection consists of one folder of materials related to Skiles' employment at Bethlehem Steel.