This is a great read:
(Tele)Visions of Tomorrow
The introduction of television to the American public has long been one
of the most-discussed aspects of the 1939 World's Fair. But did anyone
there realize how important this moment would be?
The Official Guide Book of the New York World's Fair expends
only two sentences on television. More space is given to Nature’s
Mistakes, a barnyard freak show featuring a bull with “skin so
transparent that the veins are visible.” It’s possible that the editors,
confronted with crazy items like Elektro the Moto-Man and a
transatlantic “rocket gun,” assumed television was just another
Introducing Television at the Fair
The 1939 World’s Fair in New York was the coming-out party for
television. For almost two decades before, networks and entrepreneurs
were experimenting with the new electronic technology, hoping to perfect
a mass communication system that would surpass radio.