How does a guy get a screw around here?!? A small, old timey typewriter screw!

Where do I find old timey screws that IS NOT cannibalizing them from another typewriter?

There's got to be an acceptable answer to this.

I can't accept that the only way to get the appropriately sized screw for a 1912 Underwood 5 is to rob it from the grave of another Underwood 5.

Some OTHER thing used those screws back then! I KNOW it. Replication was what the whole point of the industrial revolution! What else used the same screws?

Come ON Capitalism! Stop disappointing! It's one thing that it's hard to find a good sodapop with cane sugar instead of corn syrup. Now I can't get a correctly sized screw on THE WHOLE INTERNET??

What's even the point of living in a capitalist society if supply doesn't meet demand?