Percy Jackson and the Olympians: The Ultimate Guide by Rick Riordan

It's the handbook no half-blood should be without: a fully illustrated, in-depth guide to gods, monsters, and all things Percy. This novelty companion to the best-selling series comes complete with trading cards, full-color diagrams, and maps, all packaged in a handy, ""manual-size"" book with a crisp, magnetic flap enclosure.