From the collection of Kirk Jackson, Rocky’s OAMI Newsletter, 1949.
Baco Ribbon in 1949? 
The Remington “All New” Portable of 1949. 
What’s an LC Smith “Foxgauge”? 
Some fun posters from Ohio Typewriter Co. 
A proposal for standardization of typewriter screws (and incidentally, a reference for the existing screws on various US Makes)
Aah! Thank you for that last snippet!
So they weren’t standard screws! That explains why I couldn’t figure out some of those threads – that almost-but-not-quite UNF 10-32 on a Corona and so on.
:-D
I have a few “talon scarred machines” myself. I really like that poster!