http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Pennsylvania History) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DPennsylvania%20History Results for your query: docsPerPage=100;f277-subject=Pennsylvania History Thu, 01 Jan 1970 12:00:00 GMT A Guide to the history of Pennsylvania. Downey, Dennis B., 1952-, Bremer, Francis J. https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT