Abstract The Copper Range Company (1899-1977) operated copper mines in Houghton County's southern communities and in Ontonagon County. The second largest mining company in the Copper Country (after Calumet & Hecla), the Copper Range Company was the only one to endure past the 1960s. In addition to mining, it owned and operated the Copper Range Railroad (1899-1973) and the Copper Range Motor Bus Company (1925-1955). Materials in the Copper Range Company Records document the history of the...

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Reports, 1923-1925, of diamond drilling at various sites in Michigan's Upper Peninsula, including Cherokee, Clark, Copper Range, Keweenaw Copper, Mass, Naumkeag, New Baltic, Oneco and Torch Lake mines. The field work was done by both Calumet and Hecla Consolidated Copper Company's Geological Division and the United States Geological Survey, probably in support of Professional Paper 144, "The Copper Deposits of Michigan."

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Collection, 1997-1998, documenting the restoration and rededication of the Ford sawmill in Alberta, Michigan.

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Papers, circa 1926-circa 1954, of Frank Kerekes, dean of faculty and professor of civil engineering at Michigan Technological University. Papers appear to span his career at Iowa State University and include correspondence, papers, reports and plans as well as some publications.

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Collection, 1901-1975, of Frank C. Schwarzenberg, a 1917 graduate of the Michigan College of Mines (now Michigan Technological University) in Houghton, Michigan. Includes maps and blueprints of the Houghton and Hancock area, geological maps of the Copper Range, clippings, mine reports, technical machine data and correspondence.

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Collection, circa 1975, of the Historic American Buildings Survey's work in Michigan's Upper Peninsula and Copper Country. Includes source people, considered buildings, structures, sites and districts, nominations for State Register of Historic Places and research documents on specific buildings, structures, sites and districts in Baraga, Delta, Gogebic, Houghton, Iron, Keweenaw, Marquette, Luce and Ontonagon Counties.

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Collection, undated, of material on the historic districts and buildings of Michigan's Upper Peninsula.

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Report and recommendations, 1949, regarding public recreation facilities in Portage Township and Houghton, Michigan.

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Records, 1933, of the Houghton County Emergency Welfare Relief Commission (also known as the Houghton County Relief Commission) in Houghton County, Michigan. Includes correspondence and reports.

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Records, 1999-2002, contains committee minutes, construction proposals, and plans for the Houghton County Courthouse, Sheriff’s Department, and Jail facilities renovations for Houghton County, Michigan.