Papers, circa 1900-circa 1940, of John T. McCall, an insurance agent in Houghton, Michigan. Includes correspondence, ledgers, photographs, postcards, licenses, receipts, and Houghton High School annuals. Also includes Masonic related items from the Houghton Lodge and other organizations as well as a Miners' Bulletin broadsheet from the 1913-1914 Copper Miners' Strike.

Records, 1948-1960, of the Lake Superior Radio Club, a group of amateur radio enthusiasts in Michigan's Upper Peninsula. Includes minutes of the club's meetings, copy of the by-laws and amendments, mailing list and correspondence as well as an amateur radio license.

Collection, circa 1930-circa 1982, of the Husky Amateur Radio Club Collection at Michigan Technological University in Houghton, Michigan. Includes minutes, licenses, correspondence, logbooks, membership cards, financial records and photographs.