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.

Collection, 1978-2010, of Larry Lankton, Professor Emeritus of History in the Department of Social Sciences at Michigan Technological University. Materials extensively document Lankton’s career and research into the copper mines of the western Upper Peninsula, both during his professorial tenure and his time with the Historic American Engineering Record.