Do You Know What I'm Going To Do Next Saturday? is a Flickr set of the pages from Helen Palmer Geisel's (Dr. Seuss's first wife) now out of print children's book that gained notoreity for its depiction of children doing fun & very dangerous things like joining the marines, playing with guns & fighting American Gladiator style.
Brian Dettmer is an artist/surgeon who carves books into intricate, astonishing & precise new pieces of art.
Su Blackwell, Thomas Allen & Abelardo Morell are artists who cut up books and then photograph the interesting, whimsical & gorgeous results.
Penguin Books is an all too brief Flickr Photoset of Penguin Book cover designs from decades past. For those interested, this book is highly recommended.