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Portage Bridge

Historic Sites, Historic Districts, Transportation, Bridges, Metal Trade, Copper Industry and Trade, Copper Mines and Mining Old Houghton-Hancock bridge. [Image was taken in Houghton, Hancock can be seen on the opposite side of the canal; the smelting works in Hancock is seen predominantly.]

Scanned: May 17, 2013


General Map of Mills along Torch Lake

Historic Sites, Historic Districts, Manufacturing Process, Mills and Millwork, Metal Trade, Copper Industry and Trade, Copper Mines and Mining General Map of Mills Along Torch Lake, scale 1': 200". [Map shows the surface and mineral features of the mills of the mining companies situated on the shores of Torch Lake. The map also shows the stamp sands in relation to Torch Lake.]

Scanned: July 18, 2012