Have you seen this? Artist Brian Dettmer creates amazing works of art using old books, meticulously glued together and carved away to expose hidden world within. Some pieces feature several books joined together, but feature only original pages with nothing added or moved around. It's a whole different way of looking at a book, isn't it? I'd never really thought about what you might see if you applied selective X-ray vision to a book. It's worth a click to see the rest of the series here.