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You searched for: Subject Geology Remove constraint Subject: Geology Subject Copper mines Remove constraint Subject: Copper mines Place Michigan, United States Remove constraint Place: Michigan, United States
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1. Geological map of Keweenaw Point, Lake Superior, Michigan; by J. W. Foster & J. D. Whitney; S. W. Hill and W. Schlatter, assistants.

1849. Foster, J. W. (John Wells), 1815-1873.,Whitney, J. D. (Josiah Dwight), 1819-1896.,Hill, S. W. (Samuel Worth), 1815-1889.,Schlatter, Wm. (William),P.S. Duval & Co. Relief shown by spot heights and hachures; depths shown by soundings. Shows mineral lands, mines, and furnaces. Appears in: Jackson, Charles T. Rep...