Magic Tree House is the #1 bestselling chapter book series! In these NEW adventure, Jack and Annie meet Balto, and then return to Camelot! Balto of the Blue Dawn: The magic tree house has returned and it's taking Jack and Annie back in time to Alaska, 1925. There they meet Balto, a jet-black Siberian husky destined to save victims of the diphtheria epidemic. But the trail isn't easy, and Balto is going to need Jack and Annie's help! Night of the Ninth Dragon: In this thrilling adventure steeped in history, Mary Pope Osborne introduces readers to classic Welsh legends and continues her own story of King Arthur, Merlin, and the Knights of the Round Table. Have more fun with Jack and Annie on the Magic Tree House website at MagicTreeHouse.com! From the Compact Disc edition.