Got my hands on what I have been after, an Army Signal Corps teletype with this example being the Kleinschmidt TT-4C which will fit perfectly in my truck setup and be usable on the air.
Now begins the slow process of attempting to figure out how it works without breaking it. I did get a couple of tips from the greenkeys list – GreenKeys Info Page – about initial steps. One particularly helpful set of startup ideas came from a museum curator which I was happy to get. Assuming I get this up and going, ill post some procedures since there are quite a few tricky parts to this machine.