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328. Map showing iron ranges and ore carrying railroads of Minnesota

Maps University Of Minnesota Public content
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... Oliver Iron Mining Co., Mining Engineering Dept. ; Duluth, Minnesota.