East side pumping station, Minneapolis.

East side pumping station, Minneapolis

The East Side Pumping Station was built on Hennepin Island in c.1885.

Black and white photograph of an Easter party at Phyllis Wheatley House, Minneapolis (Ethel Ray Nance, center right), ca. 1927.

Easter party at Phyllis Wheatley House

Easter party at Phyllis Wheatley House, Minneapolis (Ethel Ray Nance, center right), ca. 1927.

Color image of a Eastlake upholstered side chair, used in the second state capitol, ca. 1890s.

Eastlake upholstered side chair

Eastlake upholstered side chair, used in the second state capitol, ca. 1890s.

Eberhart campaign button

Eberhart campaign button

Gubernatorial campaign button for Adolph O. Eberhart, c.1909.

Eberhart campaign button

Eberhart campaign button

Adolph O. Eberhart gubernatorial campaign button, 1912.

Color image of the Ecolab building, 2014. Photograph by Wikimedia Commons user McGhiever.

Ecolab building

Ecolab building, 2014. Photograph by Wikimedia Commons user McGhiever.

Color image Ecolab buildings, St. Paul, July 2017.

Ecolab buildings

Ecolab buildings, St. Paul, July 2017. In the foreground, the new Ecolab headquarters in downtown St. Paul. Behind can be seen the old tower on Wabasha, still bearing the Ecolab name.

Black and white photograph of Economics Laboratory, 144–146 South Livingston Avenue, St. Paul, ca. 1955.

Economics Laboratory

Economics Laboratory, 144–146 South Livingston Avenue, St. Paul, ca. 1955.

Black and white photograph of economics Laboratory employees, 1935.

Economics Laboratory employees

Economics Laboratory employees, 1935.

Black and white photograph of Economics Laboratory, 293 Como Avenue, St. Paul, October 8, 1962.

Economics Laboratory, 293 Como Avenue, St. Paul

Economics Laboratory, 293 Como Avenue, St. Paul, October 8, 1962.

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