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.
Broadcast History: 1947 to 1954
My Friend Irma was a radio situation comedy that began broadcasting in April of 1947 on CBS. Marie Wilson was cast as the dumb blonde, Irma Peterson, and Cathy Lewis played her best friend and roommate. John Brown was cast as Irma’s boyfriend, Al, and Jane Morgan was originally cast as Mrs O’Reilly, proprietor of the rooming house where Irma and Jane resided.
791008 - Wilhelmina Wilson
1942-05-14_PirateLootOfIslandOfSkulls_Pt10of26
Jack Benny - 391008 - Introducing Dennis Day
LA411125 - Lum, Big Game Hunter [173]
Dennis Day 470903 (040) Dennis Runs for Mayor