http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f4-subject=Philadelphia (Pa.) -- Industry) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f4-subject%3DPhiladelphia%20(Pa.)%20--%20Industry Results for your query: docsPerPage=100;f4-subject=Philadelphia (Pa.) -- Industry Thu, 01 Jan 1970 12:00:00 GMT The industries of Philadelphia, as shown by the manufacturing census of 1870, compared with 1860 and estimates for 1875. Blodget, Lorin. 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