A routine called "Doughnut Dunkers"  led to comedian Red Skelton’s first network
radio appearance on The Rudy Vallee Show on August 12, 1937. The program
had a talent show segment and those who were searching for stardom were eager
to be heard on it. The show received enough fan mail after Skelton’s performance
to invite him back two weeks after his initial appearance and again in November of
that year. On October 1, 1938, Skelton replaced  Red Foley as the host of Avalon
Time on NBC. Skelton continued as the show’s host until late 1939, when he went
on to begin his MGM movie career.

Radio show host Rudy Vallee with a young talent constant