http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f63-subject=Potomac River Valley -- Historic houses, etc) http://norton.wrhs.org/collections/search?docsPerPage%3D100;f63-subject%3DPotomac%20River%20Valley%20--%20Historic%20houses,%20etc Results for your query: docsPerPage=100;f63-subject=Potomac River Valley -- Historic houses, etc Thu, 01 Jan 1970 12:00:00 GMT Some old historic landmarks of Virginia and Maryland: described in a hand-book for the tourist over the Washington, Alexandria and Mount Vernon Electric Railway. Snowden, W. H. (William H.) http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT