Charlie,
I had a similar issue with a title from OR that didn't match anything on the truck. Oregon DMV spent a lot of time helping me out and eventually told me that in 1950 the state assigned the number on the title and that had nothing to do with any ID/VIN numbers from the truck .... so you may be on a wild goose chase.

My state (CT) didn't car about a title, I just had to go through a VIN verification process where the technician compared the VIN plate on the door jamb to the bill or sale. Took all of 2 minutes, brought the form to DMV, plates issued.


Newbie
1950 Chevy 3100