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Start Over Subject Copper mines and mining Spatial Coverage Keweenaw Peninsula.

1. Sectional map of the Michigan Copper Range from Keweenaw Point to Lake Gogebic, showing the course and boundaries of the copper-bearing formation : also the exact location of the producing mines and those in progress of development, up to date of April 1, 1899 / [cartographic material]

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1899. 2018-12-20T18:42:34Z. 2019-02-20T15:27:45Z. Meads, A. P. (Alexander P.), cartographer. A.P. Meads. English. cartographic image. Public. Keweenaw Peninsula (Mich.), Michigan, Keweenaw Peninsula, and Keweenaw Peninsula.

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