I'm glad to see that someone else is saving this kind of stuff. Over the last seven years, my big project has been restoring a 1949 TV Mobile Unit, the DuMont Telecruiser. See what I've been up to at
www.telecruiser.com
The only other old mobile units I know of belong to the Early Television Foundation and Chuck Pharis. Chuck's is a real "fixer upper." For that matter,so was the Telecruiser. I hope there are more. I'd love to hear about them.