Mary Pope Osborne

Eight-year-old Jack and his younger sister Annie use the magic treehouse to travel back to the Middle Ages, where they explore a castle and are helped by a mysterious knight.

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.

Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle. Morgan le Fay will make Jack and Annie masters of the tree house if only they can solve four riddles -- which will take four books, of course! Dolphins at Daybreak begins the third set of four books in this magical (and increasingly popular) series! Jack and Annie are off in the Magic...

Read the #1 bestselling chapter book that started it all! Magic. Mystery. Time-travel. Get whisked back in time in the magic tree house with Jack and Annie!
Where did the tree house come from?
Before Jack and Annie can find out, the mysterious tree house whisks them to the prehistoric past. Now they have to figure out how to get home. Can they do it before dark…or will they become a dinosaur’s dinner?
The Magic Tree House...

Reading level: RL 2.2 ; Ages: 6-9 Using their magic tree house, Jack and Annie travel back to the time of the American Revolution and help General George Washington during his famous crossing of the Delaware River

The magic tree house carries Jack and Annie to New York City in 1938 on a mission to rescue the last unicorn. The city is in the grip of a terrible snowstorm. To stop the blizzard, Jack and Annie must save the unicorn made famous in the Cloister's medieval tapestries. But will that be enough to help a city that faces so many troubles?

Eight-year-old Jack, his seven-year-old sister, Annie, and Peanut the mouse ride in a tree house to the Amazon rain forests, where they encounter giant ants, flesh-eating piranhas, hungry crocodiles, and wild jaguars.

Their magic tree house takes Jack and Annie to the Arctic, where a polar bear leads them onto very thin ice.

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 headed to a land of fierce samurai and great beauty, the capital city of Edo (now the city of Tokyo), in ancient Japan in the 1600s. They bring only a research book to guide them and a magic wand with three special rules.
Formerly numbered as Magic Tree House #37, the title of this book is now

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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 summoned once again to the fantasy realm of Camelot. There, Merlin the Magician tells them that the Stone of Destiny has been stolen. The answer to its disappearance lies within a haunted castle. With a young magician named Teddy, Jack and Annie take on the challenge in an adventure that takes them...