Dog heroes：a nonfiction companion to Magic tree house #46: Dogs in the dead of night Dog heroes :：a nonfiction companion to Magic tree house#46: Dogs in the dead of night / Horse heroes：A nonfiction companion to Magic Tree House #49: Stallion by Starlight Space：a nonfiction companion to Magic tree house #8, Midnight on the moon Titanic：a nonfiction companion to Magic Tree House #17: Tonight on the Titanic Warriors：a nonfiction companion to Magic tree house #31: Warriors in Winter a nonfiction companion to Magic tree house #5 : Night of the ninjas a nonfiction companion to Magic tree house #8, Midnight on the moon Rain forests :：A nonfiction companion to magic tree house #6, Afternoon on the Amazon / The other title：a nonfiction companion to Magic tree house #54, Balto of the Blue Dawn