http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f5-subject=Railroads -- United States -- Maps -- Bibliography) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f5-subject%3DRailroads%20--%20United%20States%20--%20Maps%20--%20Bibliography Results for your query: docsPerPage=100;f5-subject=Railroads -- United States -- Maps -- Bibliography Thu, 01 Jan 1970 12:00:00 GMT Preliminary inventory of the cartographic records of the Office of the Secretary of the Interior: record group 48. United States National Archives and Records Service., Kelsay, Laura E. 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