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 1940 edition is digitized here with content covering a range of cellulose and naval stores products, including Cellulose Acetate, Ethyl Cellulose, Chlorinated Rubber, Yarmor Pine Oil, and D.H.S. Activator.
Hercules Incorporated. “1940 Hercules Advertisements,” 1940. Records of Hercules Incorporated, Volume 1940. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/44558f159.
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