Snakes and Other Reptiles: A Nonfiction Companion to Magic Tree House #45: a Crazy Day With Cobras (Magic Tree House Fact Tracker)

Benjamin Franklin: A nonfiction companion to Magic Tree House #32: To the Future, Ben Franklin! (Magic Tree House Fact Tracker)

China: Land of the Emperor's Great Wall: A Nonfiction Companion to Magic Tree House #14: Day of the Dragon King (Magic Tree House Fact Tracker)

Space: A Nonfiction Companion to Magic Tree House #8: Midnight on the Moon SPACE （Magic Tree House (R) Fact Tracker） [ Mary Pope Osborne ]

World War II: A Nonfiction Companion to Magic Tree House Super Edition #1: World at War, 1944 (Magic Tree House Fact Tracker)

Pilgrims: A Nonfiction Companion to Magic Tree House #27: Thanksgiving on Thursday (Magic Tree House Fact Tracker)

Titanic: A Nonfiction Companion to Magic Tree House #17: Tonight on the Titanic (Magic Tree House (R) Fact Tracker)

Tsunamis and Other Natural Disasters: A Nonfiction Companion to Magic Tree House #28: High Tide in Hawaii (Magic Tree House (R) Fact Tracker)

Knights and Castles: A Nonfiction Companion to Magic Tree House #2: The Knight at Dawn (Magic Tree House (R) Fact Tracker)

Titanic: A Nonfiction Companion to Magic Tree House #17: Tonight on the Titanic (Magic Tree House: Fact Tracker Book 7) (English Edition)

Space: A Nonfiction Companion to Magic Tree House #8: Midnight on the Moon (Magic Tree House: Fact Trekker Book 6) (English Edition)

Ninjas and Samurai: A Nonfiction Companion to Magic Tree House #5: Night of the Ninjas (Magic Tree House (R) Fact Tracker)

Sea Monsters: A Nonfiction Companion to Magic Tree House Merlin Mission #11: Dark Day in the Deep Sea (Magic Tree House (R) Fact Tracker)