Parts sources.
 

One of the things I have noticed on this forum and a few others is the difficulty people have finding bearings and seals for a lot of these obsolete rigs. All you need is a good caliper. Most people try to find the bearing or seal by application. But that's not always feasible. Most bearings were used in lots of other things. And while most bearing outfits can look up by application it's easier to look up bearings by size, Recently I rebuilt a 3 speed brownie made in 1939. There are no parts books with #s around for this. I just measured the inside and outside of the bearings. And all but one was available. The one that was not available had a wider inner race on a caged roller bearing. But I just used a .120 inch Torrington washer and the replacement bearing. So fetch if you read this. Get a good caliper and measure away.

Re: Parts sources.
 

If someone has success doing this and comes up with usable part numbers, maybe you could post here. Jolly has a "known parts list" on his site, but I don't know if he ever adds to it.

Maybe that could be a subject line for this forum.