http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Yellowstone National Park -- Guidebooks) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DYellowstone%20National%20Park%20--%20Guidebooks Results for your query: docsPerPage=100;f277-subject=Yellowstone National Park -- Guidebooks Thu, 01 Jan 1970 12:00:00 GMT Official guide to the Yellowstone National Park: a manual for tourists. Riley, W. C. (William C.) 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