MARY POPE OSBORNE and NATALIE POPE BOYCE are sisters who grew up on army posts all over the world. They work together on Magic Tree House® Fact Tracker books to give readers information about the places, time periods, and animals that Jack and Annie discover in their Magic Tree House adventures.
Mary lives in northwest Connecticut. Natalie makes her home nearby in the Berkshire Hills of Massachusetts. Mary is the author of all the Magic Tree House® fiction titles, as well as many more books for kids.
SAL MURDOCCA has illustrated more than two hundred childrens trade books and textbooks. He is also a librettist for childrens opera, a video artist, an avid runner, a hiker, a bicyclist, and a teacher of childrens illustration at the Parsons School of Design. Sal lives and works in New York with his wife, Nancy.