The WGAZ/WSBT Station Records contains information pertaining to the origins and early operations of radio station WGAZ/WSBT in South Bend, Indiana. WGAZ was Indiana's first commercial radio station, owned by the South Bend Tribune newspaper. WGAZ broadcast its first commercial radio program on July 3, 1922. The station was started and managed by Tribune staff member, Eugene Leuchtman. In 1925, the station's call letters were changed to WSBT. WSBT-TV began in 1952, becoming America's first commercially-built UHF station.
From the guide to the WGAZ/WSBT Station Records, 1922-1973, 1922-1955, (Mass Media and Culture)