Records, 1975-1976, on the state-wide local records inventory conducted in Michigan. With funding from the National Endowment for the Humanities and under the direction of the Michigan History Division, Michigan Technological University Archives and Copper Country Historical Collections participated in a regional inventory of county and municipal records. Includes correspondence, reports, and inventories.

Collection, 1819-1978, of John Munro Longyear relating to the coal operations of the Svalbard Archipelago in the Arctic Ocean north of Norway, especially on Spitsbergen, the largest island. Includes photographs, publications, newspaper clippings, maps, and correspondence. Some published items are in various non-English languages; English translations are available for a portion of the publications.

Correspondence, 1866-1925, of Lucius L. Hubbard, a one-time professor at the Michigan Mining School, State Geologist of Michigan, and executive of Upper Peninsula copper mining companies.

Letter books, 1862-1905, from various law offices in the Houghton County, Michigan area. Also includes several freight books from the steamer IVANHOE as well as ledgers from the merchant firm, J. Hoar & Brother.

Papers, circa 1908-circa 1941, of Mary Bracco Manger of Calumet, Michigan. Includes personal correspondence, photographs and other printed ephemera as well as two notary public certificates for Emil H. Manger and portraits of Mary Bracco Manger and Emil H. Manger.

Family papers, 1861-2003, compiled or produced by Mary Ralph Erkkila, her mother Annie Sullivan Ralph, and their relatives on the lives and familial relationships of the Sullivan and Ralph families in the Upper Midwest.

Letter book, December 26, 1889-December 2, 1891, copy of letters from B. F. Chynoweth, agent for the Mass Mining Company.

College administrative records, 1885-1956, largely of the Michigan College of Mines (now Michigan Technological University) in Houghton, Michigan.

Collection, 1893-1961, of the Alumni Association of the Michigan College of Mines and the subsequent Michigan College of Mining and Technology (now Michigan Tech Alumni Association) in Houghton, Michigan. Includes correspondence, minutes, programs, clippings and photographs for the planning and celebration of various reunions.

Correspondence, 1922-1926, of the Michigan College of Mines (now Michigan Technological University) Lode, the official student newspaper of the college. Includes letters to incoming students, replies to inquiries, requests for subscriptions, and bank statements as well as other organizational business correspondence.