Research and development division, Economics Laboratory

Black and white photograph of research and development division, Economics Laboratory, 1938.


Employees of the research and development division of the Economics Laboratory (later Ecolab) at work on the sixth floor of the Globe Building in St. Paul, 1938. Pictured are John Effinger, Roy Frommer, Clarence Olson, and John Lewis Wilson.

Holding Location

Minnesota Historical Society

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