Report on the geology and topography of a portion of the Lake Superior land district in the State of Michigan - Foster, J. W. (John Wells), 1815-1873.; Whitney, J. D. (Josiah Dwight), 1819-1896 (Washington, Printed for the House of Reps., 1850)
pt. 1. Copper lands.--pt. 2. The iron region, together with the general geology.
Pt. 2 has title: Report on the geology of the Lake Superior land district; publisher: A. B. Hamilton.
Keywords: Copper mines and mining -- Superior, Lake, Region; Iron mines and mining -- Superior, Lake, Region; Geology -- Lake Superior region