a nonfiction companion to Magic tree house #31: Warriors in Winter Warriors：a nonfiction companion to Magic tree house #31: Warriors in Winter A nonfiction companion to magic tree house #43:Leprechaun in Late Winter a nonfiction companion to Magic Tree House #43: Leprechaun in late winter a nonfiction companion to Magic tree house #3: Mummies in the morning a nonfiction companion to Magic tree house #5 : Night of the ninjas a nonfiction companion to Magic tree house #23, Twister on Tuesday a nonfiction companion to Magic tree house # 3, Mummies in the morning a nonfiction companion to Magic tree house #5 : Night of the ninjas / a nonfiction companion to Magic Tree House #12: polar bears past bedtime