General view of the laboratory office space at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. The employees seated at the desks are identified as A.H. Reynolds (left) and C.C. Dennis (right). The female employee standing in the doorway is 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. “Laboratory Office at Dearborn Chemical Company,” 1927–1928. BetzDearborn, Incorporated Records, Box 17, Folder 16. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/zc77sr03r.
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