September 29, 1940: Double or Nothing debuted on Mutual. Each correct answer would double the winning prize, but any incorrect answer would eliminate the contestant. The show was sponsored by Chooz breath candy, Feen-A-Mint, and Campbell's soup. The show continued for 12 years on radio. The Mutual Broadcasting System (MBS) was an American radio station system, in function from 1934 to 1999. In the fantastic age of United States radio dramas, MBS was best known as the unique system home of The Lone Range r and The Activities of Monster . For many years, it was a nationwide broadcaster for Major League Baseball, airing events such as the All-Star Game and the World Series, in addition to broadcasting Notre Dame football. From the mid-1930's on, MBS ran a very well known news service associated with a wide range of popular topics. Toward the end of its run as a major programmer, it presented the nation to Larry King.