The extensive collection of Hercules advertising materials, covering the years 1913 through 1952, documents the company's growth as a major manufacturer of chemical products. A portion of the 1941 edition is digitized here with content covering a range of products, including pine oil, terpenes, explosives, and blasting supplies.
Hercules Incorporated. “1941 Hercules Advertisements,” 1941. Records of Hercules Incorporated, Volume 1941. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/rn301225t.
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