Web Sites: Alibris.com
Why I am recommending this site:
Alibris offers books that are hard to find or out of print. Because you can search by date, subject or author it is easy to discover great books that you have never even heard.
I found a great book on this site that was written in 1910...
From the Website:"Think how Alibris.com or Amazon.com have radically changed the buying and selling of used books." - The New York Times, 12.03.05
Alibris connects people who love books, music and movies to thousands of independent sellers around the world. Our proprietary technology and advanced logistics allow us to offer over 60 million used, new and out-of-print books to consumers, libraries and retailers.