Notecards, approximately 1999-2009, depicting reproductions of colored pencil original drawings by Charles Matson, a Houghton native and Michigan Technological Univeristy alumnus.

Accounts, 1894-1925, of the United States Coast Guard at the Copper Harbor Light Station in Copper Harbor, Michigan. Includes daily expenditures and daily accounts of stores as well as the general account of supplies for Gull Rock Light Station, located off the northern tip of the Keweenaw Peninsula. Also includes an unidentified ship's log.

Records, circa 1850-circa 1900, pertaining to Copper Harbor Light Station in Copper Harbor, Michigan. Includes letters and appointments of lighthouse keepers and lighthouse inspectors for the 11th district which includes Copper Harbor.

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.

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

Journals, 1895-1930, kept by the lighthouse keepers at the Mendota Lighthouse in Bete Gris, Michigan. Daily entries include lighthouse duties and upkeep, some weather information, housekeeping activities, visitors and trips for provisions.

Correspondence, 1924-1937, between Oliver St. Andre and the Lighthouse Service, later the Bureau of Lighthouses and the War Department Engineer Office. Includes several commendations for St. Andre and his assistant as well a description of a buoy recovery operation after ice had moved the mark off-station.

Correspondence, 1897-1923, from the Light-House Inspector of the Eleventh District to the keeper of the Portage Range Light Station in Jacobsville, Michigan. Includes administrative information, general circulars and notices to mariners.

Logbook, 1939-1945, for the Rock of Ages Lighthouse, a U.S. Coast Guard maintained lighthouse west of Isle Royale in Michigan's Keweenaw County.