I think this forum has the most helpful readers in the world. Thanks for all your comments. My husband did get the drawers opened. Unfortunately, there were no more bobbins in there but I'm sure there is one in the machine itself.
Yes, she is quite a handsome lady in her simple cabinet. The flywheel (?) turns very easily by hand. Don't know what it will do when the belt is in place. The belt is there but not on the wheel. Once we get moved into our new addition and I am settled in my new sewing room, I'll do some serious investigating.
Thanks so much, vschieve, for the links. I'm especially excited about the manual and instructions.