Mary Pope Osborne: 233 books

Lions and tigers and bears—oh, man! Jack and Annie have survived all kinds of dangers on their adventures in the magic tree house. Find out how you can survive lots of scary situations, including sharks, earthquakes, fires, shipwrecks, and many more! With full-color photographs and illustrations,...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie!! When Jack and Annie got back from their adventure in Magic Tree...

Track the facts about your favorite animals in an ebook collection of popular Magic Tree House nonfiction! Jack and Annie love animals! And they love to learn more about the animals they encounter on their adventures in the magic tree house. Join them as they track the facts about dolphins,...

Tom et Léa ont voulu en apprendre plus sur les chiens de sauvetage, ces animaux sensationnels. Qui sont-ils ? Comment font-ils en cas d'avalanche pour retrouver des gens ensevelis sous la neige, et les maintenir en vie jusqu'à l'arrivée des secours ? Et pourquoi les choisit-on pour accompagner...

Track the facts about warriors, weapons, and battles throughout history in this nonfiction companion to the #1 bestselling Magic Tree House series! When Jack and Annie came back from their adventure in Magic Tree House #31: Warriors in Winter, they had lots of questions. What kinds of weapons...

Track the facts about the great printer, inventor, and Founding Father, Benjamin Franklin! When Jack and Annie came back from their adventure in Magic Tree House #32: To the Future, Ben Franklin! they had lots of questions. What was Ben Franklin's first job? How did a kite teach him about electricity?...

Track the facts about the unicorn of the sea--the narwhal--and its closest relatives! When Jack and Annie came back from their adventure in Magic Tree House #33: Narwhal on a Sunny Night, they had lots of questions. What is a narwhal? Why is it nicknamed the unicorn of the sea? What other whales...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! It's a treasure trove of trouble! Jack and Annie are in for a high-seas adventure when the Magic Tree House whisks them back to the days of deserted islands, secret...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Merlin the magician and Morgan le Fay have disappeared, and in order to find them, Jack and Annie journey with their friends Teddy and Kathleen to the Land-Behind-the-Clouds,...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Jack and Annie are on a mission to find (and inspire!) creative people. This time, Jack and Annie meet an Irish girl and go on a magical adventure that changes the...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Jack and Annie head to 18th-century Austria, where they must find and help a musician by the name of Mozart. Decked out in the craziest outfits they’ve ever worn—including...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Jack and Annie must rescue a beautiful magical creature—the unicorn. But when they land in New York City during the Depression of the 1930s, Jack and Annie are confused....

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Jack and Annie are off on another mythical mission at the request of Merlin the magician. Luckily, they have a young sorcerer, Teddy, to help them. From underwater...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Merlin sends Jack and Annie on a mysterious mission to Paris, France, over a 100 years ago. There they must find four magicians and give them an urgent message from...