This book investigates three perplexing historical sightings including the most-famous Bigfoot story from Northern California, nine unidentified flying objects (UFOs) in Washington state, and an alien abduction in Vermont. Readers will enjoy the story-like writing style all while learning about history. Complete with sidebars, more facts, and informative diagrams. QR Codes in the books give readers access to book-specific resources to further their learning. Aligned to Common Core Standards and correlated to state standards. DiscoverRoo is an imprint of Pop!, a division of ABDO.