a nonfiction companion to Magic tree house #5 : Night of the ninjas a nonfiction companion to Magic tree house #8, Midnight on the moon "A nonfiction companion to Magic tree house #55: Night of the Ninth Dragon." "A nonfiction companion to Magic tree house #53: Shadow of the shark" Ninjas and samurai：a nonfiction companion to Magic tree house #5 : Night of the ninjas Space：a nonfiction companion to Magic tree house #8, Midnight on the moon Ninjas and samurai :：a nonfiction companion to Magic tree house #5 : Night of the ninjas / A nonfiction companion to magic tree house #6, Afternoon on the Amazon / a nonfiction companion to Magic tree house #23, Twister on Tuesday Titanic：a nonfiction companion to Magic Tree House #17: Tonight on the Titanic