Research papers, 1915-1922, compiled in 1993 by Lawrence T. Fadner documenting the Navy Radio Station NUG in Calumet, Michigan, formerly owned and operated by the Marconi Wireless Telegraph Company of America with the call sign WCM. The radio station was taken over by the U. S. Navy in April, 1917 and was located on the Tamarack Junior location, owned by the Osceola Mining Company.