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A collection of research papers prepared by former Calumet High School Principal, R. Charles Stetter, concerning the Central Mine in Keweenaw County, Michigan. Includes photographs, photocopies, research notes, clippings and manuscript documents.

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Papers, 1905-1952, of George P. Schubert, a professor of civil engineering at Michigan Technological University in Houghton, Michigan. Includes course descriptions, lecture notes, and samples of grade books.

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Collection, 1956-1987, of the Institute on Lake Superior Geology.

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Collection, 1833-1994, bulk 1860-1964, of genealogical and historical materials compiled by June and Richard Ross of Redlands, California.

Abstract Abstracts, circa 1845-circa 1929, compiled by Calumet and Hecla in support of the publication of USGS Professional Paper 144. Files contain information abstracted from a variety of sources including newspaper and magazine articles, published stockholder reports, mine superintendent reports, state and federal geological surveys, and unpublished company reports. Many files include blueprint maps of underground workings, surface buildings and property ownership. More than one hundred mines and...

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Records, 1954-Circa 1995, of the United Steelworkers of America Local 5024 in White Pine, Michigan. Includes minutes, administrative files, contract agreements, bargaining notes, grievance and compensation files, arbitration files, and 1983 White Pine Mine strike records.