I always wondered why the drawings of Daniel Boone and early settlers showed giant trees. They seemed to by in an area that was nothing like the Appalachians that I understood. I always chalked it up to greedy lumber companies. But this is amazing history and a warning of the damage one could create by importing foreign plants and seeds. We are even carful with taking cut wood across state lines these days. We have many foreign species in the great lakes. Pine beetles everywhere now. For as tough as this planet is, it's eco system is sometimes very fickle.