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.

Collection, circa 1940-circa 1990, of Alpha Phi Omega's Epsilon Lambda Chapter at Michigan Technological University in Houghton, Michigan. Consists largely of the organization’s documents, memorabilia, and photographs and includes meeting minutes, national documents, member information, officer documents, clippings, photographs and memorabilia.

Papers, 1913-Circa 1918, of the Care family of Painesdale, Michigan. Includes a certificate of naturalization for Richard James Care with wife, Constance, and daughter, Gladys, mentioned as well as a baptismal certicate. Also includes photographs of James, Constance, and Gladys in addition to a silver child's cup with a monogrammed "G" and several lodge ribbons.

Collection, 1874-2021 (Bulk 1874-1998), of research material and memorabilia compiled by Charles K. Hyde.

Collection, circa 1966-circa 1978, of Congressman Philip E. Ruppe, a former politician from Michigan and a native of Laurium, Michigan. Collection documents his role in Congress and consist of correspondence from constituents, statements on Upper Peninsula issues, tapes and memorabilia.

Collection, circa 1900-2016, related to research findings and assembled materials for the Copper Country Hockey History website developed by Connie Julien (2003-2011.)

Collection, 1972-2012, of personal and professional importance compiled by Dr. Robert and Ruth Nara.

Collection, 1897-1956, of Edwin J. Collins, a veteran of the Spanish-American War, a 1903 graduate of the Michigan College of Mines (later Michigan Technological University) and eventual member of the board of directors for the Calumet and Arizona Mining Company. Includes diaries, photographs, textbooks, instruments and mine maps of properties he worked on as well as several souvenir spoons and service medals from the Spanish-American War.

Collection, 1953-1982, in honor of Emma Goldman, a Russian emigrant to the United States and an anarchist in the early twentieth century. Includes anarchist literature, pamphlets and political buttons.

Collection, 1920-1981, of Ernest Townsend, a professor at the Michigan College of Mining and Technology (now Michigan Technological University) in Houghton, Michigan. Includes personal diaries or date books of Ernest and his wife Libby, awards, photographs, and playbills as well as information about the various organizations he was part of and about his years of employment and service to the college.