http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f8-subject=Flying machines -- History) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f8-subject%3DFlying%20machines%20--%20History Results for your query: docsPerPage=100;f8-subject=Flying machines -- History Thu, 01 Jan 1970 12:00:00 GMT Flight before flying. Wragg, David W. 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 evolution of the flying machine: balloon, airship, aeroplane. Harper, Harry, b.1880 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