There is a series of pictures here:
http://www.whitehousemuseum.org/west...ce-history.htm It looks like Kennedy kept the ctc-10, but Johnson had a unit installed that was 3 sets in one console.
The remote does actually turn the tint, color, and volume controls.
I checked all the tubes. None shorted, or so weak that they obviously won't work. The 6AQ5 (audio output) was weak enough that I'll probably swap it out, and the 6EM7 (vertical) was slightly weak, but I'll probably see if there's actually any vertical trouble before changing it. Most of the tubes had been changed in this set over the years, it probably saw at least 10 years or so of service, many tubes have that more modern looking RCA logo on them. It is interesting to note that all the replacement tubes are RCA tubes, I think this is the first time I've ever seen anyone actually pay attention to the signs they put on stuff that say "use only ... tubes."