http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f8-subject=United States -- Commerce -- History -- Sources) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f8-subject%3DUnited%20States%20--%20Commerce%20--%20History%20--%20Sources Results for your query: docsPerPage=100;f8-subject=United States -- Commerce -- History -- Sources Thu, 01 Jan 1970 12:00:00 GMT The records of American business. O'Toole, James M., 1950- 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