The Bituminous coal mine maps of Pennsylvania were created by the Works Progress Administration from 1934-1938. Workers transcribed information about the extent of underground bituminous coal mines on to these maps, as well as locations of oil and gas wells.The counties covered include Allegheny, Armstrong, Beaver, Bedford, Blair, Bradford, Butler, Cambria, Cameron, Centre, Clarion, Clearfield, Clinton, Elk, Fayette, Forest, Fulton, Greene, Huntingdon, Indiana, Jefferson, Lawrence, Lycoming, Mercer, Somerset, Sullivan, Tioga, Venango, Washington, and Westmoreland.USGS 15 minute quads for areas containing a WPA Bituminous coal mine map. Links go to the entire collection and to a search of the quad name. Each 15 min quad is broken up into 5 minute quads. Maps were scanned by Penn State University Libraries.Questions, contact EMSL@psu.edu