books.google.com - Countless books have been published on the historical sites of the Hudson River Valley. But these books have focused over and over again on the best-known, best-preserved places. Every bit as valuable are dozens of other historical sites that haven't fared as well. Many of these buildings are listed...http://books.google.com/books/about/Hudson_Valley_Ruins.html?id=8bJ6ai_KRL0C&utm_source=gb-gplus-shareHudson Valley Ruins
