"A nonfiction companion to Magic Tree House #33: narwhal on a sunny night." a nonfiction companion to Magic tree house #5 : Night of the ninjas A nonfiction companion to magic tree house #43:Leprechaun in Late Winter a nonfiction companion to Magic tree house #23, Twister on Tuesday "A nonfiction companion to Magic Tree House #49: Stallion by Starlight." "A nonfiction companion to Magic tree house #53: Shadow of the shark" A nonfiction companion to Magic Tree House #39: Dark day in the deep sea. 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 #6, Afternoon on the Amazon /