On August 26, 1939, the first televised Major League baseball
game was broadcast on station W2XBS, the station that was
to become WNBC-TV. Announcer Red Barber called the game
between the Cincinnati Reds and the Brooklyn Dodgers at
Ebbets Field in Brooklyn, New York.

This all started in April of 1939 with the opening of The World’s
Fair, when David Sarnoff told the nation that RCA had “added
radio sight to sound”, and officially kicked off the age of
television.

Barber (in suit) called the first game on NBC Radio and
moved over to TV for the second game.

The President of RCA, David Sarnoff, dedicating the RCA
Building at the 1939 World’s Fair in New York.