"Charles Grover Thurber" should just be Charles Thurber.
"Christopher L. Sholes": his preferred way of referring to himself was probably C. Latham Sholes.
The Tippa S is sometimes carriage-shifted.
I should also have mentioned British eBay (ebay.co.uk).
"DIN 2013" should be DIN 2103.
Better not use carburetor cleaner, it can be harsh.