"The Casebook of Jerry Browning, Private Detective" or "Calling All Detectives" was a crime drama radio show sponsored by Sealy Mattress company, and featured Paul Barnes who played all the roles including the role of
detective Browning. During the show, Paul Barnes randomly dials a telephone number, then gives one of the audiences a chance to solve the mystery of the week.
However, the random phone calls did not click so Barnes decided to dial only the numbers of the listeners. The telephone calls were removed from the program
later on because it was used in syndicate. This two-man operation radio show aired from 1945-1950.