MARY POPE OSBORNE is the author of the New York Times #1 bestselling Magic Tree House series as well as coauthor of the Magic Tree House Fact Tracker series, along with her husband, Will, and her sister, Natalie Pope Boyce. nFor more information, visit the Magic Tree House website at MagicTreeHouse.com! n nAG FORD is a New York Times bestselling childrens book illustrator and recipient of two NAACP Image Awards. He grew up in Dallas with his mom, his dad, two sisters, and one brother. He majored in illustration at the Columbus College of Art and Design. He lives with his family in Frisco, Texas. Visit him online at agfordillustration.com.n