http://www.rssboard.org/rss-specification 720 https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f21-subject%3DAmerican%20Ambulance%20Field%20Service. Results for your query: docsPerPage=100;f21-subject=American Ambulance Field Service. Thu, 01 Jan 1970 12:00:00 GMT https://catalog.wrhs.org/collections/data/rdf/VF_subject42.xml Miscellaneous materials relating to the American Ambulance Field Service, including: two advertisements for volunteer ambulance drivers in France https://catalog.wrhs.org/collections/data/rdf/VF_subject42.xml Thu, 01 Jan 1970 12:00:00 GMT