Mary Pope Osborne

Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.

Jack and Annie are taking the magic tree house to the 1970 World Cup in Mexico City! They are sure the famous soccer player Pelé will tell them a secret of greatness. The game is nonstop action, and the stands are packed. But how will they find Pelé in a crowd of 100,000 soccer fans? Will the answer come when they least expect it?

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
The magic tree house has returned and it’s taking Jack and Annie back in time to Alaska, 1925. There they meet Balto, a jet-black Siberian husky destined to save victims of the diphtheria epidemic. But the trail isn’t easy, and Balto is going to need Jack and Annie’s help!
Formerly numbered as Magic...

Jack and Annie visit the Paris World's Fair of 1889 in an effort to protect four scientific pioneers from an evil sorcerer.

Jack and Annie are transported by their magic tree house to the time of the Civil War where they meet Clara Barton.

"A nonfiction companion to Magic Tree House #52: Soccer on Sunday"-- Shares up-to-date information, photos and illustrations in a companion to Soccer on Sunday that offers additional facts about everything from the history of soccer and the sport's most notable players to the traditions surrounding the World Cup. --Publisher's description.

"A nonfiction companion to Magic Tree House #54: Balto of the Blue dawn."-- Returning from their adventure in Balto of the Blue Dawn, Jack and Annie learn fun facts about sled dogs, the Iditarod and other extreme sports, from the X Games to Ironman competitions. --Publisher's description.

Presents a non-fiction companion to the book "Abe Lincoln At Last!," discussing what it was like to grow up in a log cabin and what Lincoln's family life was like, and describes how he became the sixteenth president of the United States.

Annie and Jack present information about ancient Greece and the athletic events known as the Olympic games that were held there.

Examines the historical events the Magic Tree House book "World at War, 1944" is based on, discussing the causes of the war and D-Day with photographs and illustrations.