Sponsored by
Vicks, the series began on
Mutual Radio on October 20, 1945, heard Saturdays until April 13, 1946. Initially, it featured different hosts each week, including
John Reed King and
Johnny Olson.
Bert Parks became the full-time host in 1946. The questions were written by
Joseph Nathan Kane, the author of
Famous First Facts, who hand-delivered the sealed envelopes to the radio studio. Jack Rubin directed for producers Walt Framer and Ed Wolf. With
Vitalis Hair Tonic as the sponsor, the series returned Friday, July 5, 1946, on
ABC Radio for a run until September 23, 1949.
Bud Collyer and Bob Shepherd were the announcers, and Peter Van Steeden provided the music. On October 5, 1949, the radio series moved to the
NBC Radio Network, continuing until September 13, 1950. The radio broadcast was heard weekdays on NBC in 1950-51 and moved back to ABC weekdays for 1951–53. With
Miles Laboratories as the sponsor, the radio show moved back to weekdays on NBC for 1953–55, overlapping with a weekday radio series on Mutual during 1954–55. An announcement of the premiere TV episode said that the program would be unchanged from the radio version except for some staging modifications. Bert Parks was the host, and Marshall Diskin was the director. The co-existing radio and television broadcasts were co-hosted by Parks and Collyer. That same year,
Radio Mirror called
Break the Bank "the highest-paying quiz program in the world". ==Gameplay==