If you get on the Treadleon Digest, you'll find there are more than 1,000 members, and hopefully one of them will have a donor head that will have the parts you need. The bobbins may be a little expensive, since they haven't been made in many years. I've sold some of the White bobbins with the hole through the shaft for around $5. I think I still have some around, if that's what yours uses and you can't find them for less. Your machine probably uses 20X1 needles, too, not the modern 15X1, and I also have some of those if you're not able to find them locally, but your local sewing machine shop may have some.
Enjoy your new baby!
Pat in Rockport, TX