Most Popular Books by 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! Merlin’s beloved penguin, Penny, has been put under a spell! To save her, Jack and Annie must find a rare and precious emerald. When the magic tree house whisks them back to India over four hundred years ago to search for the jewel, they discover an amazing and exotic world filled with great danger. Formerly numbered as Magic Tree House #45, the title of this book is now Magic Tree House Merlin Mission #17: A Crazy Day with Cobras. Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!

Magic. Mystery. Time-travel. Travel in the magic tree house with Jack and Annie in this oversized, gorgeously illustrated deluxe edition of the adventure that started it all from the #1 bestselling chapter book series--for the first time with brand-new full-color illustrations! 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? This fantasy adventure from the internationally bestselling Magic Tree House series will capture the imagination and is perfect for reading aloud. Newly illustrated by Antonio Javier Caparo with rich and whimsical art, this gorgeous edition is one to cherish. Did you know that there''s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Beware of avalanches! When the magic tree house whisks Jack and Annie back in time to the highest pass in the Swiss Alps, they discover an ancient monastery filled with monks and Saint Bernard dogs. Annie can’t resist offering to train a wild young dog named Barry, but he is quite the handful! Before the night is over, Jack and Annie will be forced to use some crazy magic! Formerly numbered as Magic Tree House #46, the title of this book is now Magic Tree House Merlin Mission #18: Dogs in the Dead of Night. Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures

Travel back in time in the magic tree house with Jack and Annie in this #1 bestselling series and meet the greatest warriors of all--the Romans! We are warriors! Jack and Annie have met knights, pirates, ninjas, and Vikings, but they have never met the most fearsome warriors of all: Roman soldiers. When the magic tree house whisks them back to the early 100s AD, Jack and Annie find themselves in a Roman camp. Their mission: Be like a warrior. That is easier said than done! The Roman soldiers are much scarier in person--and suspicious of strangers. Then a mysterious man riding a black horse gives Jack and Annie some advice to help them on their mission. But the man may not be who he seems. Will Jack and Annie be good warriors? Can they learn what makes the Roman soldiers so great? And who is the mysterious rider . . . ? Did you know that there''s a Magic Tree House book for every kid? Magic Tree House: Perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures If you''re looking for Merlin Mission #31: Summer of the Sea Serpent, it was renumbered as part of the rebrand in 2017 as Merlin Mission #3.

"Travel to Ancient Greece with Jack and Annie as they meet Alexander the Great and help tame his wild stallion"--

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 master of escape? It’s going to take some determination, a little bit of trouble, and a whole lot of magic! Formerly numbered as Magic Tree House #50, the title of this book is now Magic Tree House Merlin Mission #22: Hurry Up, Houdini! Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures

The adventures that started it all! Newly bound together, the first four books of the fan-favorite chapter-book series are the perfect introduction to the New York Times bestselling Magic Tree House series. Parents, teachers, and librarians hail the series as a tool to promote reading, as even the most reluctant readers want to know where the Magic Tree House will take the brother-and-sister team next. The story begins with Dinosaurs Before Dark, when Jack and Annie discover a mysterious tree house filled with books and a trip back to the time of the dinosaurs follows. In The Knight at Dawn, Jack and Annie are in the Great Hall of a castle; a feast is under way, but they aren''t exactly welcome guests. When the tree house whisks them back to ancient Egypt in Mummies in the Morning, Jack and Annie must help a long-dead queen solve a puzzle. And in Pirates Past Noon, Jack and Annie find a secret map that leads to buried treasure and ruthless pirates! Mary Pope Osborne brings together just the right combination of history, magic, and fast-paced adventure to satisfy kids, parents, teachers, and librarians all over the world with her New York Times bestselling series.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Gentle giants or giant monsters? That''s the question Jack and Annie have about gorillas when the Magic Tree House sweeps them to the mountains of Africa. There they meet a group of amazing and sometimes frightening mountain gorillas. Annie knows how to play with the creatures right away. But Jack is left out. Will the gorillas be able to teach him some special magic? Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures

Eight-year-old Jack and his little sister, Annie, are playing in the woods during their summer holiday, when they find a mysterious tree house full of books. But these are no ordinary books . . . And this is no ordinary tree house . . . Jack and Annie get more than they had bargined for when Jack opens a book about dinosaurs and wishes he could see them for real. They end up in prehistoric times with Pteranodons, Triceratops and a huge Tyrannosaurus Rex! How will they get home again? The race is on . . . !

The #1 bestselling Magic Tree House series is ready to whisk you away through time with Jack and Annie--this time to South America! When the magic tree house whisks Jack and Annie to a mountainside, they are surprised to find farmers nearby. Then they learn that the farmer''s baby llama has been stolen, and Jack and Annie vow to bring the little animal back to its owners. But the journey is treacherous--they must climb to the peak of Machu Picchu and climb back down in order to complete this mission. Jack and Annie have been on many dangerous travels, but can they survive this one? Track the facts with Jack and Annie in the nonfiction companion to this book: Llamas and the Andes. Did you know that there''s a Magic Tree House book for every kid? Magic Tree House: Perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures If you''re looking for Merlin Mission #34: Season of the Sandstorms, it was renumbered as part of the rebrand in 2017 as Merlin Mission #6.

When eight-year-old Jack and his seven-year-old sister, Annie, join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures.

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 try to aid a president and a troubled nation! Formerly numbered as Magic Tree House #47, the title of this book is now Magic Tree House Merlin Mission #19: Abe Lincoln at Last! Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures

Make storytime a little spookier with the #1 bestselling chapter book series of all time! Every visit to the magic tree house leads to a time-travel adventure! Is this town HAUNTED? Jack and Annie wonder when the Magic Tree House whisks them to the Wild West. But before they can say "Boo!" they rush headlong into an adventure filled with horse thieves, a lost colt, rattlesnakes, and a cowboy named Slim. Will Jack and Annie have time to solve the next Tree House Riddle? The answer may depend on a ghost! Did you know that the Magic Tree House series has two levels? MAGIC TREE HOUSE: Perfect for readers 6-9 who are just beginning to read chapter books—includes this boxed set! MERLIN MISSIONS: More challenging adventures for experienced readers ages 7-10 The Magic Tree House series has been a classroom favorite for over 25 years and is sure to inspire a love of reading—and adventure—in every child who joins Jack and Annie!

The #1 bestselling chapter book series is now a graphic novel! Magic. Mystery. Time-travel. Get whisked to the time of pirates with Jack and Annie! Captured by pirates! When Jack and Annie are whisked away in the magic tree house, they arrive on a beautiful beach. It’s paradise! That is, until the pirates arrive. . . The dreaded Cap’n Bones is looking for buried treasure. He thinks Jack and Annie know where it is. And he’s not letting them out of his sight until they find it! Sail back in time and around the world with Jack and Annie in Magic Tree House® graphic novels! The vibrant and energetic art of Kelly and Nichole Matthews perfectly captures the adventure, mystery, and magic of the original #1 New York Times bestselling series. For the first time in graphic novel--live the adventure again with new full-color art that brings the magic to life!

The #1 bestselling Magic Tree House series is ready to whisk you away through time with Jack and Annie--this time to the snowy mountains of Nepal! The magic tree house has whisked Jack and Annie to the Himalayas in Nepal. They’re searching for the mysterious Gray Ghost. Well, they’re supposed to be. Jack does not want to find a ghost. But he and Annie are excited about all the amazing animals they see. So excited, in fact, that Annie and Jack get lost in the mountains! Can they make their way to safety before the Gray Ghost finds them? Did you know that there''s a Magic Tree House book for every kid? Magic Tree House: Perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures If you''re looking for Merlin Mission #36: Blizzard of the Blue Moon, it was renumbered as part of the rebrand in 2017 as Merlin Mission #8.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Goal! Jack and Annie have tickets to one of the most exciting soccer games ever—the 1970 World Cup! 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? Have they failed their mission? Or will the answer come when they least expect it? Formerly numbered as Magic Tree House #52, the title of this book is now Magic Tree House Merlin Mission #24: Soccer on Sunday. Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Cannon fire! That''s what Jack and Annie hear when the Magic Tree House whisks them back to the time of the American Civil War. There they meet a famous nurse named Clara Barton and do their best to help wounded soldiers. It is their hardest journey in time yet—and the one that will make the most difference to their own lives! Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures

While time-traveling brother and sister team Jack and Annie journey to a village in the mountains of southeast China, they find they have arrived on the day of a historic earthquake.

Guided by a magic rhyme, Jack and Annie travel to ancient Baghdad on a mission to help the Caliph disseminate wisdom to the world.

The #1 bestselling Magic Tree House series is ready to whisk you away across the world with Jack and Annie--this time as World Turtle Experts in the Galapagos Islands!! It''s just a regular day when ordinary kids Jack and Annie are whisked away in the magic tree house to the Galapagos islands, where they must save a giant tortoise from an erupting volcano! But what do Jack and Annie know about saving turtles?! Plenty, thanks to some magic that makes them experts. A helicopter ride, rushing lava, and a whole lot of determination make this one adventure Jack and Annie will never forget! Did you know that there''s a Magic Tree House book for every kid? Magic Tree House: Perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Graphic Novels: Relive the original adventures brought to life with art by Kelly & Nichole Matthews If you''re looking for Merlin Mission #38: Monday with a Mad Genius, it was renumbered as Merlin Mission #10 when the series was rebranded in 2017.