Advertisement for Dowflake Calcium Chloride, a product of the Dow Chemical Company marketed for use to control dust on unpaved roads and parking lots, as well as a roadway deicer. The advertisement details the nuisance of dust arising from the use of motor cars and extols the benefits of using Dowflake as a surface treatment to lock in moisture and reduce the maintenance and upkeep required of unpaved gravel roads. This advertisement appeared on the inside cover of the June 1939 edition of Fortune magazine.
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Dow Chemical Company. “The Call of the Open Road...is for Dust Control!,” June 1939. Advertisements from the Dow Chemical Historical Collection, Box 7. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/sf2685799.
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