books.google.com - From the anthracite mines of Pennsylvania at Carbondale to the Hudson River in New York near Kingston, the Delaware & Hudson Canal Company and the Gravity Railroad transformed long tracks of wilderness into thriving economic areas. Conceived as an inexpensive way to transport anthracite coal, the canal...http://books.google.com/books/about/The_Delaware_Hudson_Canal_and_the_Gravit.html?id=OKl_mv6xD9sC&utm_source=gb-gplus-shareThe Delaware & Hudson Canal and the Gravity Railroad
