XTF Search Results (docsPerPage=100;f7-subject=Railroads, Gravity)

http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f7-subject=Railroads, Gravity) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f7-subject%3DRailroads,%20Gravity Results for your query: docsPerPage=100;f7-subject=Railroads, Gravity Thu, 01 Jan 1970 12:00:00 GMT Robert A. Chesebrough's system of locomotion for elevated railroads: Patented July 14, 1868. Letter of Gen. Egbert L. Viele. Chesebrough, Robert A. (Robert Augustus), 1837-1933, Viele, Egbert L. (Egbert Ludovicus), 1825-1902 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