Western Pennsylvania Coalfields
- Virtual tour and overview of historical coal mining sites in Western Pennsylvania.
- http://www.coalcampusa.com/westpa/

Coal Mining and the Molly Maguires
- Links to information on the secret society formed by Irish immigrant coal miners.
- http://www.columbiapa.org/historical/molly_maguires.html

Virtual Museum of Coal Mining in Western Pennsylvania
- Virtual Museum of Coal Mining in Western PA covering the Coal Mines, Coal Companies, and Coal Miners of Western PA. Westmoreland County Index on-line.
- http://patheoldminer.rootsweb.com/index.html

The Carpathian Connection-Bitumen, PA
- Genealogy and historial reference on ancestors from Carpathian Mountains of Eastern Europe. Site has entire section devoted to Pennsylvania with page on Bitumen, a Slovak Town with Slovak Catholic Shrine.
- http://www.tccweb.org/bitumen.htm