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Department Archives Remove constraint Department: Archives Genre Photographs Remove constraint Genre: Photographs Creator Dearborn Chemical Company Remove constraint Creator: Dearborn Chemical Company Creator The Fensholt Company Remove constraint Creator: The Fensholt Company

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    • 1930s

    General view of Dearborn Chemical Company employee C.B. Smith utilizing a concentration hydrometer during a water sample field test. Assorted glassware and a Dearborn portable testing cabinet are also visible on the…

    • 1930s

    General view of Dearborn Chemical Company engineer F.B. Horstmann utilizing a portable testing cabinet to conduct a water sample field test. A stamp on the verso of the photograph for "The Fensholt Company," a public…

    • circa 1938

    General view of an unidentified employee preparing a water sample for testing at a Dearborn Chemical Company's laboratory facility in Chicago, Illinois. A stamp on the verso of the photograph for "The Fensholt Company,"…

    • 1930s

    General view of Dearborn Chemical Company employee E.P. Fager preparing a water sample for testing. A stamp on the verso of the photograph for "The Fensholt Company," a public relations firm based in Chicago, suggests…