I came across this interesting web site the other day that has a lot of information about the history of television
One of the greatest 20th century inventions.
Learn about the history of TV-set design, development and marketing.
Once you are inside a major time period, you will find photographs of television sets from around the world, year-by-year links to important facts, magazine covers and advertising. See examples of the world’s first television sets, up to and including HDTV models.
They have some great pictures of very old televisions, as well as a lot of trivia type information.