Broadcasting Magazine

"My True Story" debuted on ABC radio and ran for seventeen years. The daily
program was presented in cooperation with "True Story" magazine, the source of
the stories for the radio series. The magazine, first published in 1919. was said to
be one of the earliest in today’s genre of confession magazines and continued on
radio for nearly 19 years.   

George Burns and Gracie Allen

Burns and Allen debuted as regulars on The Guy Lombardo Show on CBS
radio. When Lombardo switched to NBC, they took over his CBS spot with 
The Adventures of Gracie beginning September 19, 1934. Two years later
it evolved into the “Burns & Allen Show”. George and Gracie continued on
radio for 14 more years before making the switch to television.

Isaac Sidney "Sid" Caesar

(September 8, 1922 – February 12, 2014)

Will Rogers (far right), Art Gillham, Wendell Hall, Carson Robison, Eveready Quartet, Graham McNamee and the Waldorf-Astoria Dance Orchestra.

"The Eveready Hour" became radio’s first commercially sponsored network variety
program. The National Carbon Company was the first sponsor of the show which 
originated from WEAF Radio in New York.

The AR-812, manufactured in 1924, was the first commercial superhet.