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.

Photograph collection, 1938-1989, 2003, of Herman Gundlach, Jr., president of Herman Gundlach, Inc., a construction company based in Houghton, Michigan. Includes photographs from 84 photo albums showing buildings constrcuted by Herman Gundlach and successive contruction firms. Most buildings are in Michigan's Upper Peninsula, espcially Houghton and Ontonagon counties.

Collection, circa 1970-2005, of the Keweenaw County Historical Society, an organization dedicated to preserving and sharing the history of Michigan’s Keweenaw County.