General view of the office of Laboratory Director Dudley Kimball French (center) at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. The female employees visible in the photograph are unidentified.
Founded in 1887, the Dearborn Chemical Company was a corporate ancestor of BetzDearborn, Incorporated best known for manufacturing water treatment chemicals for use in boilers, cooling towers, and steam locomotives.
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Dearborn Chemical Company. “Office of Laboratory Director at Dearborn Chemical Company,” 1927–1928. BetzDearborn, Incorporated Records, Box 17, Folder 16. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/hh63sw84z.
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