Those stamp-sized bookseller labels often found on the rear paste down end paper of old and rare books are often as artistically interesting as the books' dust jackets; high karat precious gems of graphic design in small settings.Howard Prouty, of ReadInk Books, has been collecting vintage booksellers' labels for many years and has put together quite a lovely assemblage on the ReadInk Books website, where he writes:"I think the pleasure I take from these little things has something to do with a certain dimensionality they add to the mostly-unknown story of a particular book's previous life. To buy a book...