David Sarnoff Introduces Television as a New Industry at the New York World's Fair, April 20, 1939

David Sarnoff, president of the Radio Corporation of America, is pictured here introducing monochrome television at the 1939 New York World's Fair. In 1946, he similarly introduced electronic color television. Sarnoff was a technology advocate and credited as the "father of broadcasting"--the idea that radio could serve as mass communication--rather than messages sent between one operator and another.