Space：a nonfiction companion to Magic tree house #8, Midnight on the moon 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 a nonfiction companion to Magic tree house #5 : Night of the ninjas A nonfiction companion to magic tree house #6, Afternoon on the Amazon / Pirates：a nonfiction companion to Magic Tree House #4, Pirates Past Noon a nonfiction companion to Magic tree house #23, Twister on Tuesday Rain forests :：A nonfiction companion to magic tree house #6, Afternoon on the Amazon / Ninjas and samurai：a nonfiction companion to Magic tree house #5 : Night of the ninjas Mummies and pyramids：a nonfiction companion to Magic tree house # 3, Mummies in the morning