http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f62-subject=Coal -- Pennsylvania) http://norton.wrhs.org/collections/search?docsPerPage%3D100;f62-subject%3DCoal%20--%20Pennsylvania Results for your query: docsPerPage=100;f62-subject=Coal -- Pennsylvania Thu, 01 Jan 1970 12:00:00 GMT The geology of Pennsylvania: a government survey. Rogers, Henry D. (Henry Darwin), 1808-1866, Geological Survey of Pennsylvania http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Report of progress 1874-1889, A-Z. Geological Survey of Pennsylvania, Pennsylvania Board of Commissioners for the Second Geological Survey. http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT History of the introduction of anthracite coal into Philadelphia. Hazard, Erskine., Fell, Jesse. http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Report of progress in the Clearfield and Jefferson district of the bituminous coalfields of western Pennsylvania. Platt, Franklin, 1844-1900 http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Report of progress in the Greene and Washington district of the bituminous coal-fields of western Pennsylvania. Stevenson, John J. (John James), 1841-1924, Pennsylvania State Geologist (1874-1890). http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Analysis of some of the anthracites and iron ores found on the head waters of Beaver Creek: in the counties of Luzerne, Northampton and Schuylkill, Pa. Johnson, Walter R. (Walter Rogers), 1794-1852 http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Report of a survey and exploration of the coal and ore lands belonging to the Allegheny Coal Company: in Somerset County, Pennsylvania ; accomppanied by maps, profiles and sections. Johnson, Walter R. (Walter Rogers), 1794-1852 http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT