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

Soccer: A Nonfiction Companion to Magic Tree House Merlin Mission #24: Soccer on Sunday (Magic Tree House: Fact Trekker Book 29) (English Edition)

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)

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

Dark Day in the Deep Sea (Magic Tree House: Merlin Missions Book 11) (English Edition)

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

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

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

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

Dinosaurs: A Nonfiction Companion to Magic Tree House #1: Dinosaurs Before Dark (Magic Tree House (R) Fact Tracker)

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

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