Papers, 1914-1958, of Floyd Doane, including correspondence, photographs and clippings pertaining to Lake Superior maritime activities.

Photograph albums, 1946, compiled by Frances Mary Potter during extended summer travel in Michigan's Upper Peninsula, with brief stops in northern Wisconsin and Ontario, Canada.

Collection, 1853-1978, of the St. Mary's Canal Mineral Land Company of Boston, Massachusetts, a land holder with mineral rights on property along the Lake Superior copper region. Includes correspondence, financial records, land deeds and holdings, field journals and reports. Material in this collection complements material in the Copper Range Company Collection.