Thanks for the note. Been working on replacing the rusted brake lines and had my head in the wrong place with master/wheel cylinder. The wheel cylinder here is seized, so most likely will replace but I will try to open it to get the dust covers loose.
So I got a title with the truck that says 1948. Got the 48-51 manual, and were in the garage looking in it and wondering why I can't find this configuration. Took a step back and asked - is this the right manual? What year truck is this? Well, it's a 1947. Only major difference is the parking brake is a lever, not pedal.
Great advice - the shop manual for the 47 is in the mail!