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.

Records, 1911-1927, of the Shelden Mining Company of Lake Superior.

Correspondence, 1899-1913, consisting of exchanges between James Cooper, the superintendent of the Calumet and Hecla Mining Company's smelter in Lake Linden, Michigan and H.Y. Bassett, a Calumet and Hecla Mining Company executive from the East Coast offices. The letters, including reports, address metallurgical issues as well as the results of comparative testing of Michigan copper versus copper from other regions as used by consumers of copper.

Collection, 1974-1995, of records related to the history of the Girl Scout day camp Blueberry Knoll located near Houghton, Michigan.

Papers, circa 1965-circa 1981, of Captain John H. Bruce, USCG (Ret.) relating to his work for Congressman Philip Ruppe on the Committee on Merchant Marine and Fisheries in the United States House of Representatives. Includes reports, papers and correspondence on Great Lakes issues, including shipping, icebreakers, shoreline erosion, fisheries and environmental management.

Report, 1973-2005, on the archaeological excavation of Site 20 KE 53, Cliff Mine in Michigan's Keweenaw Peninsula, done in 1973 by Eleanor Andrews, at that time on the faculty of Michigan Technological University's Department of Social Sciences. Includes the final report, maps, references, bibliographies, research notes and field notes and material.

Reports, 2012-2021, of the Copper Country Audubon.

Records, 1988-1990, of the Copper Country Citizens for Recycling, a community-based advocacy group in Michigan's Copper Country concerned with recycling issues and options. Includes correspondence, financial records, clippings, work proposals, meeting agendas, and other printed ephemera.

Records, 2012-2013, of the Copper Country Survey, a historic preservation project which surveyed above-ground structures and historic resources in Keweenaw, Houghton, and Ontonagon counties as well as northwestern Baraga county. The Keweenaw National Historical Park Advisory Commission oversaw the survey.