General view of an unidentified female laboratory technician preparing a water sample for analysis at the Dearborn Chemical Company's 35th Street Laboratory. 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. “Female Technician at Work in Dearborn Laboratory Facility,” 1924. BetzDearborn, Incorporated Records, Box 17, Folder 13. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/h128nf570.
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