The Museum of Broadcast Communications is a nice website. Lots of history there.
[[Due to funding problems, their long-suffering project to reopen in their own building has been stalled for several years, so you can't go and actually see it today.]]
They had exhibits with historical Chicago broadcast connections, such as Fibber McGee's closet, Edgar Bergen's Charlie McCarthy, and a TV camera used in the first Presidential debate (Kennedy-Nixon).
The coolest exhibit they had was a news studio (with room for a small audience) where you could sit in the anchor's chair and do an entire newscast. It came complete with director, floor manager, teleprompter, and taped inserts for on-the-scene reports, weather, and sports. You could buy the tape and take it home with you.