There's a Documentary out there called KTLA's 50 Golden Years, it's not easy to find because I don't think it was ever released on video.
There is this 4 minute short recap on YouTube:
http://www.youtube.com/watch?v=U80kp...C681D8&index=0
I found this PDF of their history too, haven't read it yet so I don't know how good it is.
http://www.google.com/url?sa=t&sourc...irtpkXri00fQBw