On this day in 1902, Nathan Stubblefield made the first public demonstration of radio in Pennsylvania.

On this day in 1925, Lucrezia Bori and John McCormack of New York City's Metropolitan Opera made their radio singing debuts.

On this day in 1926, The Rose Bowl football game was aired for the first time, coast-to-coast, on network radio.

On this day in 1928, Algemeene Vereeniging Radio Omroep (AVRO) began broadcasting (Netherlands).

On this day in 1930, "The Cuckoo Hour" was broadcast for the first time on the NBC-Blue Network (it later became the ABC Radio Network).

On this day in 1968, the ABC Radio Network split into 4 networks: the Information, Entertainment, Contemporary and FM networks.

On this day in 1971, the tobacco industry was banned from buying advertisements on television and radio.

On this day in 1974, the NBC Radio Network began on-the-hour news, 24 hours-a-day.

On this day in 1992, The ESPN Radio Network debuted.