books.google.com - "James D. Rice's study of the Potomac River basin begins with a mystery. Why, when the whole of the region offered fertile soil and excellent fishing and hunting, was nearly three-quarters of the land uninhabited on the eve of colonization? Rice wonders how the existence of this no man's land influenced...http://books.google.com/books/about/Nature_and_History_in_the_Potomac_Countr.html?id=5zVZJ8an1roC&utm_source=gb-gplus-shareNature and History in the Potomac Country
