Collection, 1904-2005, of Donald L. Nelson, a local maritime historian and former lighthouse keeper and retired member of the U.S. Coast Guard. Includes research files on lighthouses, life saving stations, Coast Guard vessels, and other maritime topics as well as photographs, articles, and books written by Donald Nelson.

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.

Diary, 1886-1891, of Francis Jacker, the lighthouse keeper at Raspberry Island, Wisconsin, part of the Apostle Islands group in Lake Superior. Includes descriptions of daily activities, with notes on ships passing the lighthouse.

Collection, 1935-2022, of material related to Camp Sidnaw.

Photograph collection, 1954-1967, of black-and-white photographs taken by John Harry Reeder, a retired mining engineer in Houghton, Michigan. Images include Great Lakes shipping, Michigan copper mining locations, and the construction of the Portage Lake Lift Bridge.

Collection, approximately 1970s-1983, of color photographs and slides taken by Keith Baldwin.

Tribute, undated, to Maude Sincock Roberts, a resident of Hancock, Michigan and a TITANIC survivor. Includes biographical information, Maude's account of her rescue, newspaper clippings and other copies of TITANIC-related ephemera.