Boom copper ; the story of the first U. S. mining boom /

by Murdoch, Angus
Published 1943

History and review of copper, iron, silver, slate and other material interests of the south shore of Lake Superior /

by Swineford, Alfred P.
Published 1876

The copper mines of lake Superior /

by Rickard, Thomas Arthur
Published 1905

A true description of the Lake Superior country : its rivers, coasts, bays, harbours, islands, and commerce : with Bayfield's chart, <showing the boundary line as established by Jo...

by St. John, John R.
Published 1846