Book 29 in the Magic Tree House series (2001) A cup, a compass, a key: the magic tree house has brought siblings Annie and Jack to Camelot, where they embark on a mysterious mission to find these enigmatic gifts. In this special hardcover addition to the bestselling Magic Tree House series, the young adventurers must travel to the Otherworld, an "ancient, enchanted land beyond the edge of the Earth, the place where all magic began" to save Camelot from dark wizard Mordred's evil spell.
Book 28 in the Magic Tree House series (2003) 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 a tidal wave and, of course, take some time out to surf! Ultimately, they discover that the magic that they have found in this set of four books are everyday magics: the magic of the arts, the magic of the natural world, the magic of community; and the magic of fun.
Book 26 in the Magic Tree House series (2002) A novel by Mary Pope Osborne The Magic Tree House whisks Jack and Annie off to the mountains of Africa. There they run into a huge mountain gorilla! At first they don't know whether they should shake hands or turn tail. But the ominous-looking creature turns out to be surprisingly gentle. Not only that, the gorilla may be able to help them learn their next bit of magic, which Morgan has challenged them to do.
Book 24 in the Magic Tree House series (2001) A novel by Mary Pope Osborne The year is 1906, the place is San Francisco. Annie and her brother, Jack, have just traveled here in their magic tree house, on a mission from Morgan le Fay, the mysterious magical librarian from King Arthur's time. In an effort to save Camelot, the children have already found three special kinds of writing for Morgan's library: something to follow (Civil War on Sunday), something to send, and something to learn.
Book 23 in the Magic Tree House series (2001) A novel by Mary Pope Osborne In the third book of the American history cluster, Jack and Annie are whisked to a midwestern prairie in the 1870s. They visit a one-room schoolhouse and learn about the hard life of the pioneers. When they return to the magic tree house, Jack and Annie spot a twister on the horizon. Is there time to warn the teacher and the children back at the schoolhouse? Or should Jack and Annie just save themselves?