Sketchbook 14/15 is the newest book by the amazing Ben (Action Cartooning) Caldwell. It has 2 covers (one on each side - only the 15 side shown here). The next 3 sketchbooks are older - long out of print books, that Ben sent us. All books come signed by the artist. (14/15 is signed on both sides. that way no matter how you open it, you will find the signature.)