wraps : The paper covering on the outside of a paperback.

bookplate : A device (often decorative) affixed to the book, usually on the endpapers, which designates ownership (or former ownership).

4to : Or quarto. A term used generally to describe the approximate size of a book, a book that is about 10" to 12" tall and roughly squarish in shape. The term is based on the size of paper traditionally used by book printers which has been folded and cut into 16 pages.

ffep : Front free endpaper. Generally, the first page of a book.