Collection, 1883-2012 (Bulk, 1970-2012), related to Cornish family lines and Cornish Americans, especially the Rule Family.

Business records, circa 1920-1929, of Douglas S. Buchanan, a partner in Hogan and Buchanan, an insurance agency in Houghton, Michigan. Includes correspondence, advertisements, receipt books for insulation and weather stripping estimates, and other printed ephemera. Also includes photographs of camping and fishing expeditions.

Engineering field notes, circa 1916, from the Interstate Commerce Commission Bureau of Valuation's survey of railroad structures. Includes photocopies from the National Archives and Records Administration of building survey sheets with descriptions, photographs and floor and elevation plans of buildings owned by the Duluth, South Shore and Atlantic Railroad, such as the depot in Calumet originally constructed by the Mineral Range Railroad.

Papers, circa 1860-circa 1940, of the E. F. Sutton family. Includes records from E.F. Sutton company, correspondence, personal papers of Mary A. T. Sutton and Walter Harris Sutton as well as photographs.

Photograph collection, 1864-circa 1976, of Earl Gagnon, a resident of Ripley, Michigan and staff writer and photographer for the Daily Mining Gazette of Houghton, Michigan. Includes images of ships, railroads, lighthouses, schools, copper mines and minings and buildings as well as local sports teams, local residents and Keweenaw scenery. Also includes photographs of the construction and installation of the Bishop Baraga monument on Keweenaw Bay.

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.

Papers, 1863-1968, of the Edyvean, Alexander, and Hadwick Families of Lake Linden and Houghton, Michigan.

Collection, undated, of photographs of Eleanor Fournier, a former secretary at Michigan Technological University. Includes a childhood portrait and a photograph of Miss Fournier as an adult. Also includes an undated photograph of her father next to a Christmas tree, on the wall is a framed portrait of Fournier that is now included in the Portrait Collection as well as a nameplate from her time as a secretary.

Collection, undated, of material related to Barzditis Lewis, the original switchboard operator at Wadsworth Hall on the Michigan Tech campus.