Meet Pennsylvanias legendary monsters in this guided tour of the most complete and accurate survey of unknown creatures in the Keystone State. Based on decades of research, no other volume compares with this work for thorough, documented treatment of a fascinating subject. From giant snakes and soaring thunderbirds to Bigfoot, alien big cats, and cougars that defy official claims of their extinction, to sea-serpents playing hide-and-seek with ships along the coast, this book has something for every fan of cryptozoology and paranormal creatures.