Leonardo da Vinci: A Nonfiction Companion to Magic Tree House Merlin Mission #10: Monday with a Mad Genius (Magic Tree House: Fact Trekker Book 19)

Monday with a Mad Genius (Magic Tree House (R) Merlin Mission Book 10)

Ancient Rome and Pompeii: A Nonfiction Companion to Magic Tree House #13: Vacation Under the Volcano (Magic Tree House (R) Fact Tracker)

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

Who Was Leonardo da Vinci? (Who Was?)

Ancient Greece and the Olympics: A Nonfiction Companion to Magic Tree House #16: Hour of the Olympics (Magic Tree House (R) Fact Tracker)

American Revolution (A Nonfiction Companion to Magic Tree House #22: Revolutionary War on Wednesday)

Space: A Nonfiction Companion to Magic Tree House #8: Midnight on the Moon (Magic Tree House (R) Fact Tracker)

Sabertooths and the Ice Age: A Nonfiction Companion to Magic Tree House #7: Sunset of the Sabertooth (Magic Tree House (R) Fact Tracker)