General view of employees at work in an office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. The employees seated at the desks are identified as John W. Brashears (left) and E.J. McMahon (right). The female employee visible in the background of the photograph 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 Chemical Company Offices,” 1927–1928. BetzDearborn, Incorporated Records, Box 17, Folder 16. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/2b88qd101.
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