http://entertainment.howstuffworks.com/framed.htm?parent=tv.htm&url=http://www.earlytelevision.org/
Television has been around longer than 1937. It was just extremely rare, and in it's developmental infancy.
Pork Chops.
(Two farmers were leaning on the fence between their properties, talking.
The first farmer says "You know, when a pig gets up to 400 pounds, it's a hog."
The second farmer says "So what does that make your wife?")
Extensive research that is documented, even without computers is still extensive research. If you read what it said, you would see that computer models and crap like that are irrelevant to whether Earth was actually warmer than it is now at one time.