The E.I. du Pont de Nemours is a chemical company commonly known as the DuPont Company was established in 1802, and began by manufacturing gunpowder and later chemical compounds. The foundations for the Engineering Department were laid in 1902. The department’s purpose was to design and construct high explosives plants, design powder machinery and create extensions to existing plants. The DuPont Engineering Department collection consists of photographic material documenting Twentieth century construction projects throughout the many different E.I. du Pont de Nemours and Company work sites, including some outside construction projects within the explosives and chemical industry. There are 209 work sites which are arranged in alphabetical order.

E.I. du Pont de Nemours & Company is a chemical company, which began as a manufacturer of gunpowder in 1802. The collection consists of photographs and prints that document the early history of the DuPont Company’s involvement in the gunpowder and explosives industries from the 1860s through the 1920s. The bulk of the collection are photographs of employees, executives, and plant views, including aftermaths of explosions and construction. This collection also includes a variety of advertisements for the DuPont Company as well as other non-DuPont related trades. A large portion of this collection are oversize materials (panoramic photographs and advertising posters).

E.I. du Pont de Nemours & Company is a chemical company more commonly known as the DuPont Company. It was established in 1802 and began by manufacturing gunpowder, later moving into chemical compounds. The company's Engineering Department was initially organized in 1903 as a division of the High Explosives Department, with the purpose of designing and constructing high explosives plants, powder machinery, and extensions to existing plants. This collection of DuPont Engineering records is fragmentary in nature. The surviving records are divided into four series that document a wide range of functions and represent several different time periods in the department’s evolution. The series are: Engineering Department history file; Engineering Research Laboratory; Construction Division; and Design Division, Corfam Poromeric Technology.

Jacquelin Lee McConaughey (1920-2001) was an artist and longtime employee of the DuPont Company. This collection consists of three photographic prints of her paintings that she created for the DuPont Company's Environmental Color System.

DuPont Company Repauno Works manufactured high explosive dynamite. The company began as the Repauno Chemical Company on June 7, 1880, by Lammot du Pont (1831-1884), a chemist working for the family business, E.I. du Pont de Nemours & Company, a chemical company which originally produced gunpowder. This collection of photographs includes numerous views of the buildings, facilities, employees, and plant operations and activities.