When Jack and Annie came back from their adventure in Magic Tree House #10- Ghost Town at Sundown, they had lots of questions. What is a ghost town? Why do we call the Old West wild? What are cowboys? Who was Billy the Kid? Find out the answers to these questions and more as Jack and Annie track the facts about the American West. Filled with up-to-date information, photographs, illustrations, and fun tidbits from Jack and Annie, the Magic Tree House Fact Trackers are the perfect way for kids to find out more about the topics they discover in their favorite Magic Tree House adventures.