Harpel's Typograph, or Book of Specimens, containing useful information, suggestions, and a collection of examples of letterpress job printing arranged for the assistance of master printers, amateurs, apprentices, and others. By Oscar H. Harpel, typographic designer and printer. Cincinnati, 1870. óMany beautiful color examples.
The Practice of Typography: A treatise on the processes of type-making, the point system, the names, sizes, styles and prices of plain printing types. By Theodore Low De Vinne. New York: The Century Co., 1900.