F.B. Horstmann conducting Dearborn Chemical Company water sample field test
- 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 relations firm based in Chicago, suggests that the photograph was staged for advertising purposes. 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, and The Fensholt Company. “F.B. Horstmann Conducting Dearborn Chemical Company Water Sample Field Test,” 1930–1939. BetzDearborn, Incorporated Records, Box 15, Folder 64. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/37720d83t.
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