Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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Map showing iron ranges and ore carrying railroads of Minnesota

Map showing iron ranges and ore carrying railroads of Minnesota

1907. Hobs, Edwin and Oliver Iron Mining Company (Duluth, Minn.). Mining Engineering Department. Cartographic Details: Scale approximately 1:350,000 Inset shows generalized sections of Vermilion, Mesabi, Gogebic, Menominee, and Marquette Ranges...