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A resource for reliable information about significant people, places, events, and things in Minnesota history.
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.
Made possible by the Arts and Cultural Heritage Fund through the vote of Minnesotans on November 4, 2008. Administered by the Minnesota Historical Society.
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