10 or 15 years ago a few of us wandered to Radio Daze, a supplier of old radios and old radio parts in one of the outlying Rochester, NY farm towns. They had quite a nice showroom full of restored radios going back to the 1920's. We had a ball going through the place.
This thread reminded me of them so I looked them up and it turns out they've moved closer to town and are in the Rochester suburbs now. The web page doesn't show more than a few restored radios so they may not be doing many restorations anymore. But they do seem to have a lot of parts. Could be useful to somebody working on a project.