http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;expand=subject;f2-format=Map;f3-subject=Washington (D.C.) -- Historical geography -- Maps) http://catalog.wrhs.org/collections/search?docsPerPage%3D100;expand%3Dsubject;f2-format%3DMap;f3-subject%3DWashington%20(D.C.)%20--%20Historical%20geography%20--%20Maps Results for your query: docsPerPage=100;expand=subject;f2-format=Map;f3-subject=Washington (D.C.) -- Historical geography -- Maps Thu, 01 Jan 1970 12:00:00 GMT Atlas of historical county boundaries. Delaware, Maryland, and the District of Columbia. Long, John Hamilton., Dr. William M. Scholl Center for Family and Community History 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