General view of several employees at work in the Dearborn Chemical Company's 35th Street laboratory and manufacturing facility located in Chicago, Illinois. The three employees visible in the foreground are identified as (left to right) Irin Crocker, Charles S. White, and E.L. Konigsmark. The employee visible in the background 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 and cooling towers.
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Dearborn Chemical Company. “Employees at Work in Dearborn Laboratory Facility,” March 16, 1934. BetzDearborn, Incorporated Records, Box 17, Folder 14. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/c534fp98b.
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