Main content Advertisements from the Dow Chemical Historical Collection, 1921-1993 (inclusive) 1936-1986 (bulk) Extent: 14 linear feet (14 boxes; ca. over 900 items) Abstract: A collection of print advertisements, leaflets, posters and other ephemera created by the Dow Chemical Company, ranging from 1921-1993. Held at: Science History Institute Archives [Contact Us]