General view of employee Anton H.R. Noreen at work at the Dearborn Chemical Company's 35th Street laboratory and manufacturing facility, with view of the laboratory work bench, assorted glassware, and scientific apparatus. The employee visible in the foreground is identified as Anton H.R. Noreen. 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. “Anton H.R. Noreen at Work at Dearborn Laboratory Facility,” circa 1934. BetzDearborn, Incorporated Records, Box 17, Folder 14. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/dv13zv41w.
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