Mary Pope Osborne Books in Order

This nonfiction companion to Monday with a Mad Genius explores Leonardo da Vinci's life and Renaissance world. Chapters examine his work as an artist, scientist and dreamer, as well as his time in Florence and the people around him.

Sent to eighteenth-century Austria to help Mozart, Jack and Annie search a palace while a mischievous boy trails them. When he releases animals from the palace zoo, their mission becomes a dangerous scramble requiring the magic they have available.

To save Merlin's penguin Penny from a spell, Jack and Annie must obtain a rare emerald. The magic tree house takes them to India centuries earlier, where searching for the precious jewel exposes them to unfamiliar wonders and dangers.

Jack and Annie arrive in Victorian London on a mission to help Charles Dickens and discover that he has landed in jail. Their efforts to protect the writer's future require magic and assistance from three ghosts in a Christmas adventure.

This activity collection draws on Jack and Annie's adventures through different eras and places. More than two hundred puzzles, mazes, codes, drawing prompts and games invite readers to revisit Magic Tree House journeys through problems they can solve themselves.

This nonfiction companion examines rich and poor children's lives in Victorian England and the experiences that influenced Charles Dickens. Jobs, hardship and contrasting ways of growing up provide context for his writing and efforts to help the poor.

Jack and Annie travel to Ireland to encourage a young girl who will become Lady Gregory. Their mission to inspire creativity draws them into a magical adventure tied to the legends and cultural heritage she will later help preserve.

This nonfiction companion to Leprechaun in Late Winter explores Irish folklore, including leprechauns and fairies. It examines how old stories were preserved and introduces the Irish language, using photographs and illustrations to expand on Jack and Annie's adventure.

Jack and Annie journey to Washington in 1861, eager to meet Abraham Lincoln and complete their mission. The president's struggle with a nation in crisis leaves little time for visitors, making their attempts to help increasingly urgent.

This nonfiction companion to Abe Lincoln at Last! traces Abraham Lincoln's life from childhood in a log cabin to the presidency. It explores his family and early experiences, introducing young readers to the person behind the historical figure.

This nonfiction companion to Dogs in the Dead of Night explores the ways dogs help people. Accounts of avalanche rescues, wartime heroism and service work introduce young readers to remarkable canine abilities and the breeds suited to different tasks.

Jack and Annie travel to a monastery high in the Swiss Alps, where monks work with Saint Bernard dogs. Annie volunteers to train an unruly youngster named Barry, but avalanche danger turns the visit into a mission requiring unusual magic.

This nonfiction companion to A Crazy Day with Cobras investigates snakes and other reptiles. Questions about snake charming, venom, Komodo dragons and the differences between alligators and crocodiles guide an illustrated introduction to these animals and their behavior.

A search for a particular food takes Jack and Annie to a Chinese mountain village near a panda reserve. What appears to be a straightforward mission becomes dangerous when they discover they have arrived on the day of a major earthquake.

This nonfiction companion to A Perfect Time for Pandas explores panda habitats and diets alongside other endangered animals. It investigates why species such as snow leopards have become scarce and considers ways people can help protect threatened wildlife.

This nonfiction collection introduces six people who changed history: Florence Nightingale, Martin Luther King Jr., Gandhi, Harriet Tubman, Susan B. Anthony and John Muir. Their work in nursing, civil rights, freedom and conservation illustrates different ways to improve others' lives.

This nonfiction companion to Stallion by Starlight explores the relationship between horses and people. It examines domestication, modern equine jobs and famous horses from history, including Alexander the Great's mount, through facts, photographs and illustrations for young readers.

Merlin sends Jack and Annie to find a secret of greatness from escape artist Harry Houdini. Traveling to Coney Island, they must locate the elusive performer, facing trouble and testing their determination before they can complete the mission.

This instructional activity book teaches young readers magic tricks through diagrams, clear directions and tips from Jack and Annie. Facts about famous magicians and illusions accompany practical techniques children can use to create a show for friends and family.

Seeking a secret of greatness for Merlin, Jack and Annie meet the young Alexander the Great. His vanity and bossiness complicate their expectations, while a wild black stallion presents a challenge demanding courage, cleverness and a little magic.

This nonfiction companion to Day of the Dragon King explores Chinese history and culture through questions from Jack and Annie. Topics include the emperor associated with the Great Wall, its construction, Chinese New Year and other traditions.

Jack and Annie return to Egypt in search of another secret of greatness for Merlin. Meeting Florence Nightingale during her travels gives them a new way to think about heroism, while their own adventure brings unexpected danger.

Jack and Annie share survival knowledge drawn from their time-travel adventures, covering wilderness emergencies, natural disasters and other dangers. The nonfiction guide invites readers to consider difficult situations and learn practical ways people cope when things go wrong.

This activity journal invites children to keep a notebook like Jack and Annie, recording discoveries and making lists of their own. Examples from Frog Creek and the siblings' travels offer ideas, with space and stickers for personal entries.

This nonfiction companion explores the lives of ninjas and samurai in Japan, asking what their roles meant and whether their reputed abilities were real. Jack and Annie's questions guide readers beyond adventure stories toward the people behind the legends.

Jack and Annie investigate soccer's origins, notable players and the World Cup in this nonfiction companion. Photographs and illustrations help young readers explore the sport beyond the siblings' fictional adventure and understand its place in the wider world.

Jack and Annie attend the 1970 World Cup, hoping Pelé can reveal a secret of greatness. With a huge crowd between them and the player, their mission becomes a search for the lesson behind an unforgettable soccer game.

More than two hundred animal games, puzzles and activities draw on creatures Jack and Annie encounter in their adventures. Riddles, mazes and charades invite children to test their knowledge while exploring animals from cobras to koalas and penguins.

The magic tree house sends Jack and Annie to Europe in June 1944, just before D-Day. Their mission takes them behind enemy lines to crack a code and help save lives, with little room for mistakes in wartime.

Jack and Annie expect a relaxing holiday when Teddy sends them to a beach off Mexico's coast. Taking a raft onto the ocean turns their break into a dangerous adventure when a hungry shark threatens their escape.

Jack and Annie investigate sharks' teeth, feeding habits and the role of predators in keeping nature balanced. This nonfiction companion uses their questions to explore hunting animals, giving young readers facts behind the danger encountered in their adventure.

Jack and Annie explore why Vikings raided, how their ships worked and whether the familiar horned helmets reflect reality. This nonfiction guide separates popular images from historical evidence, introducing the people and practices behind the siblings' Viking adventure.

Jack and Annie travel to Alaska in 1925, where a diphtheria epidemic threatens lives. They meet the sled dog Balto and join a dangerous race to help bring urgently needed medicine through the harsh conditions of the trail.

This nonfiction companion examines sled dogs, the Iditarod and sports that push people to their limits. Jack and Annie's questions lead into open-water swimming, triathlons, climbing and other demanding activities, exploring what endurance and skill make possible.

Jack and Annie investigate stories of dragons, unicorns, mermaids and other creatures from myth and legend. The nonfiction companion compares traditions and considers possible explanations for reported sightings, inviting children to explore where imagination and real observations meet.

Jack and Annie gather unusual facts learned through their travels in the magic tree house. Photographs and the siblings' comments accompany a nonfiction collection designed for browsing, inviting readers to follow their curiosity beyond the adventures themselves.

Summoned to Camelot, Jack and Annie find the castle attacked and King Arthur seriously wounded. They have only a day to solve a riddle and locate a missing dragon, with the future of the kingdom at stake.

Magical baseball caps send Jack and Annie to Brooklyn in 1947, where they become batboys rather than players. Meeting Jackie Robinson is part of a mystery they must understand before the game's nine innings are over.

Jack and Annie explore baseball's beginnings, its rules and players including Jackie Robinson. This nonfiction companion answers questions raised by their adventure, introducing young readers to the history and people behind a game played across generations.

This nonfiction companion examines how World War II began, why civilians suffered and what happened on D-Day. Jack and Annie's questions guide children through the history behind their wartime adventure, supported by photographs, illustrations and factual explanations.

Jack and Annie arrive in Galveston, Texas, in 1900, where people dismiss warnings of an approaching storm. As seawater floods the city, the siblings must find ways to help those in danger with limited magic and growing urgency.

Jack and Annie investigate Texas history, including the Alamo, the Galveston hurricane, cattle ranching and oil. This nonfiction companion places their storm adventure in a broader account of the state, introducing events and people that shaped its development.

This nonfiction companion explores cowboys, ghost towns, outlaws and life on the American frontier. Jack and Annie's questions lead readers beyond their ghost-town adventure toward the historical people and experiences behind familiar stories of the Wild West.

Jack and Annie investigate Benjamin Franklin's life as a printer, inventor and Founding Father. The nonfiction companion explores his achievements, including experiments with electricity, connecting the famous figure from their adventure with the work that shaped his reputation.

Jack and Annie travel to Philadelphia in 1787 with instructions to help Dr. Ben, who turns out to be Benjamin Franklin. Their mission demands an unfamiliar and dangerous step, challenging what they think is possible with the magic tree house.

Jack and Annie explore warriors from ancient Greece and Rome to the Middle Ages, examining weapons, tactics and tournaments. This nonfiction companion connects their Roman adventure with a broader look at how different societies trained and equipped fighters.

Jack and Annie arrive at a Roman military camp in the early second century with orders to act like warriors. Suspicious soldiers make the task difficult, while advice from a mysterious rider raises questions about whom they can trust.

A trip to a South American mountainside brings Jack and Annie a new mission: recover a farmer's stolen baby llama. The search sends them up toward Machu Picchu, where steep terrain makes helping the animal a dangerous challenge.

Jack and Annie explore llamas, their relatives and the mountains where they live in this nonfiction companion. Questions about farming, mountain heights and other Andean animals extend the siblings' adventure into a study of the region's wildlife and landscape.

Jack and Annie land in Greenland with a mission to save a narwhal. They seek help from a young hunter named Leif Erikson, but his different plans complicate their effort to protect the animal and complete the task.

This nonfiction companion introduces narwhals and other whales living in Arctic waters, asking why the narwhal is called the unicorn of the sea. Jack and Annie investigate these animals' relatives and the ways they survive in cold environments.

Jack and Annie travel to Yosemite in 1903 with a mission to help save the wilderness. Joining John Muir and Theodore Roosevelt on a camping trip, they must discover why a landscape that seems so peaceful needs protection.

Mary Pope Osborne connects memories from her own life with lessons from Jack and Annie's adventures. Quotes and illustrations accompany reflections on courage, kindness and sharing one's gifts, inviting readers to consider how stories can guide everyday choices.

The magic tree house takes Jack and Annie to Nepal's Himalayas to find the mysterious Gray Ghost. Fascinated by the animals around them, they lose their way in the mountains and must reach safety despite Jack's fear of their mission.

Called away from school recess, Jack and Annie travel to South Africa to rescue a rhino. Poachers, a helicopter and watchful rangers complicate their efforts to protect an enormous animal on the open grasslands of the savanna.

Jack and Annie travel to the Galápagos Islands on a magical mission involving a giant tortoise. Strange wildlife and the challenges of the volcanic landscape test their resourcefulness as they work to understand what they must accomplish.

Jack and Annie travel to Mongolia and encounter a group of endangered wild horses. Their mission becomes dangerous when wolves approach, forcing the children to find a way to protect the animals while navigating an unfamiliar landscape.

Jack and Annie arrive in Monterey Bay to help a struggling sea otter and learn how sea life depends on the kelp forest. Restrictions on helping injured wildlife and an uncooperative boat captain complicate their magical mission.