The ninth book in the Magic Tree House series (1997) A novel by Mary Pope Osborne 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 Tree House again, this time to a whole new world under the ocean.
Children Audio Book - 2 Magic Tree House series (1993) A novel by Mary Pope Osborne Jack and Annie travel back in time to medieval England for an adventure inside a storybook castle, from feasting hall to dreadful dungeon.
Book 12 in the Magic Tree House series (1998) A novel by Mary Pope Osborne 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 cracking ice, a seal hunter, and a prodigious polar bear to deal with. Will they be able to solve the riddle before they get iced themselves?
A novel by Mary Pope Osborne The Magic Tree House whisks Jack and Annie back to the eve of the first Thanksgiving. There they meet the Pilgrims as well as Squanto, a Native American who helped them. The story offers an age-appropriate, in-depth picture of what life was really like for early settlers, as well as the usual Magic Tree House adventure and excitement.