The printers' guide, or, An introduction to the art of printing
This is a book to help printers and typesetters do their jobs. It not only addresses typography, but also punctuation and spelling. This is generally considered to be the first American "style manual."
Borrow to read
This scan is available through Internet Archive's free lending library — sign in or create a free account below, then borrow to read.
Reader not loading? Open it on Archive.org instead.