American Clean Skies Foundation
www.cleanskies.org
Independent Oil & Gas Association of PA
www.iogapa.org
Marcellus Shale Coalition
www.marcelluscoalition.org
Natural Gas Supply Association - Educational Web Site
www.naturalgas.org
Penn State University Cooperative Extension
www.naturalgas.extension.psu.edu
Pennsylvania Department of Community and Economic Development - Marcellus Shale
www.newpa.com/strengthen-your-community/redeveloping-your-community/marcellus-shale/index.aspx