http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f6-subject=Baseball -- Rules -- Periodicals) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f6-subject%3DBaseball%20--%20Rules%20--%20Periodicals Results for your query: docsPerPage=100;f6-subject=Baseball -- Rules -- Periodicals Thu, 01 Jan 1970 12:00:00 GMT Spalding's official base ball guide. Chadwick, Henry, 1824-1908, A.G. Spalding Company (Chicago, Ill.) 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 Reach's official American Association base ball guide. A.J. Reach Company (Philadelphia, Pa.) 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 Spalding's base ball guide and official league book. A.G. Spalding Company (Chicago, Ill.) 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 Official baseball rules. American League of Professional Baseball Clubs, National League of Professional Baseball Clubs, National Association of Professional Baseball Leagues (U.S.) 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 The right call: newsletter of the Umpires & Rules Committee, Society for American Baseball Research. Society for American Baseball Research Umpires & Rules Committee 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