Mutual Broadcasting System

The Mutual Broadcasting System was an American radio network. It broadcast radio shows from 1934 to 1999. It was also called Mutual Broadcasting Company; Mutual; or the Mutual Broadcasting System, Inc. 
Mutual broadcast radio shows, such as "The Lone Ranger", "The Adventures of Superman", and "The Shadow". It broadcast baseball games, including the All-Star Game and World Series, and football games for the University of Notre Dame. From 1978 to 1994, it broadcast the "Larry King Show."