Dinosaurs：A nonfiction companion to Magic tree house #1: Dinosaurs before dark Dinosaurs：a nonfiction companion to Dinosaurs before dark Warriors：a nonfiction companion to Magic tree house #31: Warriors in Winter Space：a nonfiction companion to Magic tree house #8, Midnight on the moon Pirates：a nonfiction companion to Magic Tree House #4, Pirates Past Noon a nonfiction companion to Magic tree house #23, Twister on Tuesday "A nonfiction companion to Magic tree house #53: Shadow of the shark" Titanic：a nonfiction companion to Magic Tree House #17: Tonight on the Titanic Ninjas and samurai：a nonfiction companion to Magic tree house #5 : Night of the ninjas a nonfiction companion to Magic tree house #5 : Night of the ninjas