Abstract: The Hazard Powder Company was one of the largest gunpowder and explosives manufacturers in the United States in the late-nineteenth century. This group consists of six mounted photographs showing unidentified buildings and the dam at the Hazard Powder Company in Connecticut. An unrelated print shows a covered bridge photographed in winter that crossed the Brandywine River at 16th Street in Wilmington, Delaware.

Abstract: The Hazard Powder Company was one of the largest gunpowder and explosives manufacturers in the United States in the late-nineteenth century. This small collection consists of fourteen photographs of views of Hazard Powder Company buildings. None of the images are dated, however, they appear to date from circa 1890s to the 1900s.

Abstract: James R. Thomen (1926-) was manager of the Experimental Station from 1975 to 1985 when he retired. The DuPont Company's Experimental initially, was to be a small laboratory to screen inventions which were coming into the company from outside independent inventors specifically for research on black powder, smokeless powder, and dynamite, but soon its mission was altered and it became a large industrial research facility focused on innovative advancements in chemistry. This collection consists primarily of photographs of buildings at the Experimental Station in Wilmington, Delaware taken between 1910 and 1950.