Vale of the Vole (Xanth Book 10)
Man from Mundania (Xanth Book 12)
Golem in the Gears (Xanth Book 9)
Crewel Lye (Xanth Book 8)
Dragon on a Pedestal (Xanth Book 7)
Night Mare (Xanth Book 6)
Ogre, Ogre (Xanth Book 5)