Thanks everyone for the tips!
UPDATE: I found not only the original 10 bolt, 20" wheel, but also the spare. Yes, that's right. 2 of the original wheels! I also found out that we'll be able to reuse the original gas tank AND radiator after a little cleaning and maintenance. So, it looks like it has all the original parts; just a broken u-joint.
I'm SOOOO excited! I gotta get some picture links posted. Just be patient. It's in incredible condition for sitting out in the elements for 65 years. Thank goodness for the very limited humidity in Nevada. The lack of humidity has preserved this relic from the past.
Stay tuned for more updates.
