This seminal reference book on all things book-related, for the serious or beginning bibliophile, is available in its entirety as a PDF download from this site: http://www.ilab.org/eng/documentation/29-john_carter_abc_for_book_collectors.html. This encyclopedia is filled with all sorts of interesting factoids; I learned that having a passion for uncut edges in books is called "deckle-fetishism".