http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f4-subject=Catalogs, Union Pennsylvania) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f4-subject%3DCatalogs,%20Union%20Pennsylvania Results for your query: docsPerPage=100;f4-subject=Catalogs, Union Pennsylvania Thu, 01 Jan 1970 12:00:00 GMT Resources for Ohio research in Pittsburgh, Pa. Morris, Jean Sansenbaugher, 1927- 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 Natural history in America, 1609-1860: printed works in the collections of the American Philosophical Society, the Historical Society of Pennsylvania, the Library Company of Philadelphia. Tucher, Andie., American Philosophical Society, Historical Society of Pennsylvania, Library Company of Philadelphia 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