ERRATA
p. 65
"Charles Grover Thurber" should just be Charles Thurber.
p. 67
"Christopher L. Sholes": his preferred way of referring to himself was probably C. Latham Sholes.
p. 106
The Tippa S is sometimes carriage-shifted.
p. 118
I should also have mentioned British eBay (ebay.co.uk).
p. 129
"DIN 2013" should be DIN 2103.
p. 152
Better not use carburetor cleaner, it can be harsh.