Red gold & tarnished silver : mines and minerals of the Lake Superior Copper District.
Houghton, Mich. : Copper Country Rock & Mineral Club, 2001.
2nd revised and expanded edition.
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Keweenaw Peninsula (Mich.) > Guidebooks.
"Copyright August 10, 1998 and April 26, 2001."
44 p. :
ill., maps ;
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