Advertisement for Dowflake Calcium Chloride, a product of the Dow Chemical Company, with view of a tree-lined, unpaved rural road. Patented on February 17, 1925, Dowflake was marketed for use to control dust on unpaved roads and parking lots, as well as a roadway deicer.
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Dow Chemical Company. “Enjoy the Side Roads,” 1929. Advertisements from the Dow Chemical Historical Collection, Box 7. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/j38607677.
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