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by Mary Pope Osborne, 35 pages . Eight-year-old Jack and his younger sister Annie find a magic treehouse, which whisks them back to an ancient time zone where they see live dinosaurs. For ages 6 to 9....

by Will and Mary Pope Osborne, 45 pages . Who invented the word "dinosaur"? What was the name of the biggest dinosaur? This book includes everything you ever wanted to know about the real-life world of dinosaurs. For ages 6 to 9....

by Mary Pope Osborne, 37 pages . 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. For ages 6 to 9....

by Will and Mary Pope Osborne, 41 pages . What was it like to wear armor? What was the food like in castles? This book explores what life was really like in medieval times. For ages 6 to 9....

by Mary Pope Osborne, 37 pages . Jack and his 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. For ages 6 to 9....

by Will and Mary Pope Osborne, 37 pages . How were pyramids built? Why did people make mummies? What magic charms were buried with mummies? Who discovered King Tut's tomb? Unwrap the answers to these questions and more in Magic Tree House Res...

by Mary Pope Osborne, 37 pages . The magic treehouse whisks Jack and Annie back to the days of deserted islands, secret maps, hidden gold, and nasty pirates. For ages 6 to 9....

by Will and Mary Pope Osborne, 55 pages . What were pirates really like? How did people become pirates? Where did pirates bury their treasure? Dig up the answers to these questions and more in Magic Tree House Research Guide #4: Pirates

by Mary Pope Osborne, 39 pages . The magic tree house takes Jack and Annie back in time to feudal Japan, where the siblings learn about the ways of the Ninja. For ages 6 to 9....

by Mary Pope Osborne, 35 pages . Eight-year-old Jack, his seven-year-old sister, Annie, and Peanut the mouse ride in the tree house to the Amazon rain forests, where they encounter giant ants, flesh-eating piranhas, hungry crocodiles...

by Will and Mary Pope Osborne, 37 pages . What is the strangest plant in the rain forest? Which rain forest animal is the creepiest? What medicines have been discovered there? How can we save our rain forests? Find out the answers to these qu...

by Mary Pope Osborne, 35 pages . The magic tree house transports Jack and Annie on a mission to the Ice Age where they encounter Cro-Magnons, cave bears, sabertooth tigers, and woolly mammoths. For ages 6 to 9....

by Mary Pope Osborne, 41 pages . Jack and Annie are whisked forty years forward in time and land at an international space station on the moon. There, they don space suits and go exploring the lunar surface in search of the fourth ob...

by Will and Mary Pope Osborne, 49 pages . How did the universe begin? How hot is the sun? How long does it take to get to the moon? Find out the answers to these questions and more in this book, Jack and Annie's very own guide to the secrets ...

by Mary Pope Osborne, 35 pages . 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. For ages 6 to 9....

by Will and Mary Pope Osborne, 41 pages . How fast can some dolphins swim? What is the biggest shark? Why do sharks attack? Find out the answers to these questions (and many more) in this Magic Tree House Research Guide! Includes information ...

by Mary Pope Osborne, 43 pages . Their magic tree house takes Jack and Annie back to the Wild West, where they experience excitement and danger while trying to solve a riddle. For ages 6 to 9....

by Mary Pope Osborne, 37 pages . The magic tree house takes Jack and Annie to Africa, where they meet up with wonderful wild animals, a very hungry warrior, and where they even solve a riddle. For ages 6 to 9....

by Mary Pope Osborne, 39 pages . The Magic Tree House transports Jack and Annie to the freezing Arctic. There, they must solve the final riddle to become master librarians. But it's not going to be easy - especially when they have cr...

by Mary Pope Osborne, 41 pages . Their magic tree house takes Annie and Jack to Pompeii, just as Vesuvius is about to erupt. There, they must find a Roman scroll before everything is covered with burning ash. For ages 6 to 9....

by Mary Pope Osborne, 39 pages . The magic treehouse takes Jack and Annie back two thousand years to ancient China, where they must find the original copy of an old legend before the Imperial Library is burned down by the evil Dragon...

by Mary Pope Osborne, 39 pages . Jack and Annie are off in search of another story in jeopardy, this time at a monastery in ancient Ireland. Trouble arrives when Vikings land, and Jack and Annie must find a way to escape! For ages...

by Mary Pope Osborne, 39 pages . Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to learn what girls of the time were not al...

by Mary Pope Osborne, 37 pages . The Magic Tree House whisks Jack and Annie off to the decks of that ill-fated ship, the Titanic. Their mission is to find a mysterious gift that will free a small dog from a magic spell. Once there, h...

by Mary Pope Osborne, 39 pages . The Magic Tree House carries Jack and Annie back to the Old West where they roam the Great Plains with a Lakota boy. For ages 6 to 9....

by Mary Pope Osborne, 39 pages . Jack and Annie use their magic tree house to travel back in time to the Indian jungle, where they must get a gift to help free the dog Teddy from a spell. While there, they encounter a tiger and other...

by Mary Pope Osborne, 41 pages . Jack and Annie are whisked down under to the land of Australia, where they save a baby kangaroo, a koala, and other animals from a raging wildfire. For ages 6 to 9....

by Mary Pope Osborne, 43 pages . In this exciting Magic Tree House adventure, Jack and Annie are whisked back to the Civil War where they meet Clara Barton and save the life of their very own great-great-great-grand-father. For ag...

by Mary Pope Osborne, 37 pages . The Magic Tree House whisks Jack and Annie back to Colonial America. They arrive just as General George Washington is planning the crossing of the Delaware. Before they know it, Jack and Annie are in ...

by Mary Pope Osborne, 37 pages . In the third book of the American history cluster, Jack and Annie are whisked to a midwestern prairie in the 1870's. They visit a one-room schoolhouse and learn about the hard life of the pioneers. Wh...

by Mary Pope Osborne, 41 pages . Jack and Annie travel back to the morning of the great San Francisco earthquake. While they are there, they meet a reporter and help get some kids to safety. For ages 6 to 9....

by Mary Pope Osborne, 43 pages . Mary Pope Osborne treats readers to an inside look at one of her favorite subjects--the theater. Jack and Annie travel back to Elizabethan England where they meet the Bard of Avon himself, William Sha...

by Mary Pope Osborne, 45 pages . "The adventurous Magic Tree House kids are back in Book #26, and this time, they're thumping their chests with gorillas in the African rainforest. In one of their journeys to discover different kin...

by Mary Pope Osborne, 45 pages . "Jack and Annie, the two Magic Tree House explorers, are sailing back in time to celebrate the first Thanksgiving in Book #27 of Mary Pope Osborne's popular series. When the two adventurers get a n...

by Mary Pope Osborne, 45 pages . When the Magic Tree House whisks Jack and Annie off to Hawaii (it's for more than a vacation), they're in search of a fourth kind of magic for Morgan! On the way they help an island community survive ...

by Mary Pope Osborne, 71 pages . Celebrate the wonder of the Middle Ages with this enchanting addition to the Magic Tree House series! When Jack and Annie receive a Royal Invitation to spend Christmas in Camelot, they expect feasting...

by Mary Pope Osborne, 71 pages . The intrepid 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 li...

by Mary Pope Osborne, 67 pages . 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 caves to a Spider Queen, from mystic...

by Mary Pope Osborne, 69 pages . Jack and Annie, joined by Teddy and Kathleen (from earlier books), travel in the Magic Tree House to a land of snow where the Ice Wizard has captured Morgan and Merlin. The four friends must find the ...

by Mary Pope Osborne, 73 pages . Merlin has asked Jack and Annie to help on another Merlin Mission. This time they head back into history to Venice, Italy. With the help of a research book, a book of magic rhymes, and a set of myster...

by Mary Pope Osborne, 73 pages . Jack and Annie travel back in time to a desert in the Middle East at the behest of Merlin who has given them a rhyme to help on their mission. There they meet a Bedouin tribe and learn about the way t...

by Mary Pope Osborne, 77 pages . Merlin sends Jack and Annie on a mysterious mission to Paris, France, over a hundred years ago. There they must find four magicians and give them an urgent message from Merlin himself. When Jack and A...

by Mary Pope Osborne, 77 pages . Jack and Annie are off on another Merlin Mission. This time, Merlin has sent them to rescue a beautiful, magical creature - the unicorn. But when they land in New York City during the Depression of th...