Collection, 1905-2004, of the A. E. Seaman Mineral Museum, the official Mineral Museum of Michigan, located on the campus of Michigan Technological University in Houghton, Michigan. Includes correspondence, financial reports, collection catalogs, collection documentation, mineral show papers, visitor records, photographs, awards, and other printed ephemera.

Adventure mine surface map including mine limits, no date or title. Adventure mining company reports, claims, business letters, newspaper clippings, permits, contracts, maps, books, and payroll information.

Personal papers, circa 1900-circa 1946, of Almon P. Young, a professor at the Michigan College of Mining and Technology (now Michigan Technological University) in Houghton, Michigan. Includes personal correspondence, correspondence from India, expense records, scrapbooks, clippings, and other printed ephemera as well as a banner from Purdue University, of which Young was a graduate. In addition to having worked at the Nadiad Industrial Institute, Young did missionary work in India.

Collection, 1957-1985, of the American Association of University Women Copper Country Chapter, a nonprofit organization dedicated to advocating women's rights. Includes financial reports, minutes, correspondence, dues reports, membership lists and profiles, guest book, scholarship information, foundation programs and grants, newsletters, and other printed ephemera.

Collection, circa 1919-circa 1956, of the Superior Upper Peninsula Chapter of the American Red Cross.

Postcards, 1910-1911, sent between Andy Abbott in Vulcan, Michigan and Alice Heyden in Gunnislake, Cornwall.

Collection, 1898, 1942-1975, of material related to the Arcadian Mine located in Ripley, Michigan.

Correspondence, 1915-1918, between Arthur Douglas DeFoe and colleagues at the Michigan College of Mines in the years just before and during World War I. Includes correspondence with A.E. Seaman, geology professor, J.B. Cunningham, metallurgy assistant professor and Arthur Sweet, metallurgy professor.

Records, 1890-1973, from the Atlas Powder Company, an explosives company in Senter, Michigan. Includes correspondence, order receipts, a manual of technical and competitive information, blasting tables, loading guides, and blasting record books.

Research papers, 1929-2011, for the book "Atlas Powder in Senter, Michigan" by Bill Haller, a resident of Michigan's Upper Peninsula and Copper Country historian. Includes correspondence, clippings of articles, newspapers, photographs, handbooks and manuals as well as research papers, maps and drafts.