The New York Times bestselling Magic Tree House® series has a brand-new paperback, with stickers included!  Hold your horses! Mary Pope Osborne perfectly blends fantasy, adventure, and history in this paperback edition of the bestselling Magic Tree House® chapter book. Time-traveling brother-and-sister team Jack and Annie must find four secrets of greatness for Merlin the magician. To start, they travel back in time to meet Alexander the Great. He should know all about greatness, right? But young Alexander is bossy, vain, and not great at all! How can they learn from him? It’s going to take a wild black stallion, magic from Merlin, and a lot of bravery to succeed. Are Jack and Annie clever and bold enough to complete their mission?  Have more fun with Jack and Annie on the Magic Tree House® website at MagicTreeHouse.com.

MARY POPE OSBORNE is the author of the New York Times number one bestselling Magic Tree House series. She and her husband, writer Will Osborne (author of Magic Tree House: The Musical), live in northwestern Connecticut with their three dogs. Ms. Osborne is also the coauthor of the companion Magic Tree HouseR Fact Trackers series with Will and with her sister, Natalie Pope Boyce. SAL MURDOCCA has illustrated over two hundred children’s trade books and textbooks. He is also a librettist for children’s opera, a video artist, an avid runner, a hiker, a bicyclist, and a teacher of children’s illustration at the Parsons School of Design. Sal lives and works in New York with his wife, Nancy.