Phil Harris and Dennis Day rode the popularity of Jack Benny on their own programs on NBC. In fact, for the first two years of its run, Harris' show immediately followed Benny's.
Dick Tracy on radio, from 1934 weekdays on NBC's New England stations to the ABC network in 1948. Bob Burlen was the first radio Tracy in 1934, and others heard in the role during the 1930s and 1940s were Barry Thomson, Ned Wever and Matt Crowley. The early shows all had 15-minute episodes.
On CBS, with Sterling Products as sponsor, the serial aired four times a week from February 4, 1935 to July 11, 1935, moving to Mutual from September 30, 1935 to March 24, 1937 with Bill McClintock doing the sound effects. NBC's weekday afternoon run from January 3, 1938 to April 28, 1939 had sound effects by Keene Crockett and was sponsored by Quaker Oats.
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