Copper Family

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91	PDF Document Add to Reading List Source URL: pdfhost.focus.nps.gov Language: English - Date: 2008-03-18 03:19:24 Houghton County Michigan Copper Agassiz family Calumet Historic District Houghton micropolitan area Calumet and Hecla Mining Company Calumet Downtown Historic District Keweenaw Peninsula Hecla Geography of Michigan Michigan National Register of Historic Places in Michigan