http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f70-subject=Iron mines and mining -- Pennsylvania) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f70-subject%3DIron%20mines%20and%20mining%20--%20Pennsylvania Results for your query: docsPerPage=100;f70-subject=Iron mines and mining -- Pennsylvania Thu, 01 Jan 1970 12:00:00 GMT The Thomas Iron Company, 1854-1904, chartered under the laws of Pennsylvania: Pub. for distribution to stockholders in commemoration of the fiftieth anniversary of the organization of the company. Thomas Iron Company 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 Report of progress in the district of York and Adams counties: illustrated by maps and cross-sections, showing the iron ore belts and individual mines; with descriptions of the same, notes of a transit line to establish altitudes, and a catalogue of specimens collected and placed in the museum at Harrisburg. Frazer, Persifor, 1844-1909 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