http://www.rssboard.org/rss-specification 720 XTF Search Results (f2-format=Article;expand=subject;f3-subject=Potomac River) http://catalog.wrhs.org/collections/search?f2-format%3DArticle;expand%3Dsubject;f3-subject%3DPotomac%20River Results for your query: f2-format=Article;expand=subject;f3-subject=Potomac River Thu, 01 Jan 1970 12:00:00 GMT Early landmarks between Great Hunting Creek and the falls of the Potomac. Paullin, Charles Oscar, 1868 or 9-1944 http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT