Magic Tree House Collection 16 Books Set by Mary Pope Osborne | Early Chapter Book Adventure Series

Titles in this set:

• Valley of the Dinosaurs
• Castle of Mystery
• Secret of the Pyramid
• Pirates' Treasure!
• Night of the Ninjas
• Adventure on the Amazon
• Mammoth to the Rescue
• Moon Misson
• Diving with Dolphins
• A Wild West Ride
• Lions on the Loose
• Icy Escape
• Racing with Gladiators
• Palace of the Dragon King
• Voyage of the Vikings
• Olympic Challenge