http://www.rssboard.org/rss-specification 720 XTF Search Results (f1-subject=History;f2-subject=National League of Professional Baseball Clubs -- History) http://catalog.wrhs.org/collections/search?f1-subject%3DHistory;f2-subject%3DNational%20League%20of%20Professional%20Baseball%20Clubs%20--%20History Results for your query: f1-subject=History;f2-subject=National League of Professional Baseball Clubs -- History Thu, 01 Jan 1970 12:00:00 GMT The National League, an illustrated history. Honig, Donald. http://catalog.wrhs.org/collections/view?docId=marc/skclmarc192890323275696.mrc http://catalog.wrhs.org/collections/view?docId=marc/skclmarc192890323275696.mrc Thu, 01 Jan 1970 12:00:00 GMT