Title: Blizzard of the Blue Moon (Magic Tree House Merlin Mission Series #8), Author: Mary Pope Osborne
Title: Eve of the Emperor Penguin (Magic Tree House Merlin Mission Series #12), Author: Mary Pope Osborne
Title: Magic Tree House Fact Tracker #8: Twisters and Other Terrible Storms: A Nonfiction Companion to Magic Tree House #23: Twister on Tuesday, Author: Mary Pope Osborne