Neat trucks ... Hope you get to save them and all goes well today. Had a deal like that go south at the very last minute ('46 two-ton). Had it chained down on the trailer, the yard boss changed his mind at the last moment, the giant forklift came back and lifted it off the trailer and ... gone.
If you do end up with it, be careful around those wheels and tires as they look like the Firestone RH-5 design wheel in the one picture. Read our Tech Tip on that subject before you do anything with them (including inflation).
Good luck!!