http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f5-subject=Industries -- Pennsylvania -- History) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f5-subject%3DIndustries%20--%20Pennsylvania%20--%20History Results for your query: docsPerPage=100;f5-subject=Industries -- Pennsylvania -- History Thu, 01 Jan 1970 12:00:00 GMT Made in Pennsylvania: an overview of the major historical industries of the Commonwealth. Bomberger, Bruce., Sisson, William A., Pennsylvania Historical and Museum Commission 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