Mary Pope Osborne

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
Are you ready for a presidential adventure? Jack and Annie are! They are whisked back to Washington, D.C., in 1861. Jack can’t wait to meet Abraham Lincoln himself! But the new president is too busy to see them, as he is desperately trying to save a nation in crisis. It’s a race against time as Jack and Annie...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
Abracadabra! Jack and Annie are on a mission for Merlin the magician. They’re looking for a secret of greatness from the best escape artist that ever lived, Harry Houdini. Using the magic tree house to travel back in time, Jack and Annie head to Coney Island to look for the elusive magician. How can they find the...

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 icicle city…when the Magic Tree House whisks Jack and Annie to the frozen Arctic. Luckily, a seal hunter on a dogsled lends them warm clothes. Unluckily, they get stuck on cracking ice. Will the giant polar bear save them? Or will Jack and Annie become frozen dinners?
Did you know that there’s a...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
Time-traveling brother-and-sister team Jack and Annie have to find a certain kind of food. The magic tree house whisks them off to a village in the mountains of southeast China, close to a world-famous panda reserve. Will it be their easiest adventure yet? Not a chance! Jack and Annie don't know it, but they’ve arrived...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
No girls allowed at the Olympic Games! That's the rule when the Magic Tree House whisks Jack and Annie back to ancient Greece. But when Annie tells jack to go to the games without her, he knows she's up to something. Will Annie find a way to see the games? Or will she get herself—and Jack—into Olympic-size...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
Vampire bats and killer ants? That's what Jack and Annie are about to run into when the Magic Tree House whisks them away to the Amazon River. It's not long before they get hopelessly lost. Will they be able to find their way back to the tree house? Or are Jack and Annie stuck forever in the rain forest?
Did you know...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
When Jack and Annie got back from their adventure in Magic Tree House #23: Twister on Tuesday, they had lots of questions. How do tornadoes form? What kinds of tools can help predict bad storms? Where did the biggest snowfall on record happen? How fast are hurricane winds?
Did you know that there’s...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
When Jack and Annie got back from their adventure in Magic Tree House #28: High Tide in Hawaii, they had lots of questions. What causes tsunamis? Who studies earthquakes? How do volcanoes form? What should people do if an avalanche hits? Find out the answers to these questions and more as Jack and

...

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 arrive on the one continent they haven’t visited before: Antarctica! What can they hope to learn about happiness in such a barren place? Only the penguins know for sure…Jack and Annie are about to find out!
Formerly numbered as Magic Tree House #40, the title of this book is now Magic Tree...

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 House #4: Pirates Past Noon, they had lots of questions. Did pirates really make people walk the plank? What was life...