Mary Pope Osborne

"Jack and Annie travel in the magic tree house to Galveston, Texas on September 8, 1900--the day of the worst natural disaster in US history"-- Provided by publisher.

"Jack and Annie are about to meet the fiercest warriors of all--the soldiers of the ancient Roman legion! When the magic tree house whisks them back to a ROman army camp, they learn their mission: Be like warriors. That is easier said than done--Roman soldiers are the best fighters in the world! When Jack and Annie find themselves in the wrong place at the wrong time, they're in big trouble. Who will save Jack and Annie?"--Page [2] of cover.

Jack and Annie know all about Ben Franklin. He was a Founding Father, a journalist, and a famous inventor! When the magic tree house whisks them back to meet the man himself, they're not sure what their mission is. But Ben Franklin has a mission of his own. Intrigued by Jack and Annie, he's curious to learn more about where they came from. And very curious about their tree house. . . . -- from Amazon.

"The magic tree house whisks Jack and Annie away to South America, where they must climb Machu Picchu to save a baby llama."-- Provided by publisher.

"When the magic tree house returns it whisks Jack and Annie away to the Galapagos Islands where they become World Turtle Experts and must save a tortoise in danger of an erupting volcano"-- Provided by publisher.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
The magic tree house has returned and it’s taking Jack and Annie back in time to Alaska, 1925. There they meet Balto, a jet-black Siberian husky destined to save victims of the diphtheria epidemic. But the trail isn’t easy, and Balto is going to need Jack and Annie’s help!
Formerly numbered as Magic...

The magic tree house is back with a message from Morgan le Fay telling Jack and Annie to seek out "The Gray Ghost" and listen to her story, and immediately they are whisked away to Nepal where they meet Tenzin, a climber who has recently lost his family, and who takes them up the mountain to meet a snow leopard and renew himself.

The magic tree house takes Jack and Annie to an African rainforest, where the siblings encounter gorillas and learn to communicate with them.

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

"The magic tree house whisks Jack and Annie to Africa where they must use magic to save a rhino and her baby from poachers"-- Provided by publisher.