http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f14-subject=Symmes, John Cleves, -- 1780-1829) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f14-subject%3DSymmes,%20John%20Cleves,%20--%201780-1829 Results for your query: docsPerPage=100;f14-subject=Symmes, John Cleves, -- 1780-1829 Thu, 01 Jan 1970 12:00:00 GMT A lecture on Symmes' theory of concentric spheres: read at the Western Museum. Matthews, Thomas Johnston, 1787-1852, Deming, Anson N. 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 Symmes' theory. Peck, John Weld, 1874- 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 Symmes's theory of concentric spheres: demonstrating that the earth is hollow, habitable within, and widely open about the poles. McBride, James, 1788-1859, Symmes, John Cleves, 1780-1829 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