What book dealers really mean. Click on thumbnails for larger images.

Quarter leather

A book with only the spine bound in leather, and the rest of the book in a different material, such as cloth or papercovered boards.


Also abbreviated "4to." When a large printed piece of paper is folded twice to make a gathering of eight pages, but in modern books, used as an indication of size, usually a book that is between 10" to 13" tall.