Book excerpt: Native Americans have long survived off the land of Pennsylvania's plains and mountain-lands. The many species of trees, bushes and plants throughout the state have provided them with food, medicine and shelter. Whether for survival, curiosity or just for fun, this book will walk you through identifying and utilizing Pennsylvania's natural wonders. If disaster strikes, this book is a must-have; you will be able to confidently walk through urban areas or the deep wilderness and possess much of the knowledge and skill the Native Americans used to survive.