Bone by Jeff Smith (2004)
Warriors: The Darkest Hour by Erin Hunter (2004)
Warriors: A Dangerous Path by Erin Hunter (2004)
Warriors: Rising Storm by Erin Hunter (2004)
Warriors: Forest of Secrets by Erin Hunter (2003)
Warriors: Fire and Ice by Erin Hunter (2003)
Warriors: Into the Wild by Erin Hunter (2003)
Night of the Spadefoot Toads by Bill Harley (2008)*
Behind the Crystal Ball: Magic, Science, and the Occult from Antiquity Through the New Age by Anthony Aveni (1996)