The Grand Ole Opry is a weekly country-music stage concert in Nashville, Tennessee. It was founded on November 28, 1925, by George D. Hay as a
one-hour program called the "barn dance" on WSM radio. The name was
changed when the phrase "Grand Ole Opry" was first uttered on the air 
on December 10, 1927.

George Dewey Hay (November 9, 1895 – May 8, 1968)

Camille Bohannon

The program was devised by and starred Gertrude Berg

The NBC comedy/drama The Goldbergs began as a weekly
15-minute radio program called The Rise of the Goldbergs
and went daily in 1931. The series moved to CBS in 1936
with the title shortened to The Goldbergs. The show aired
until 1946. It made the switch to television in 1949 and ran
until 1956.

Gertrude Berg (center) and several cast members of the show.

The National Broadcasting Co. (NBC), founded by the Radio Corporation of
America (RCA), debuted with a radio network of 24 stations. The first network
radio broadcast was a four-hour "spectacular." NBC is the oldest major
broadcast network in the United States.

A 1926 Freed – Eisemann Model 40 Radio