http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Transportation -- Ohio River Valley) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DTransportation%20--%20Ohio%20River%20Valley Results for your query: docsPerPage=100;f277-subject=Transportation -- Ohio River Valley Thu, 01 Jan 1970 12:00:00 GMT A history of transportation in the Ohio valley: with special reference to its waterways, trade, and commerce from the earliest period to the present time. Ambler, Charles Henry, 1876-1957 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