www.wchspa.org/ - Historical and genealogical information.
https://powerlibrary.org/ - Includes billions of historical documents from 48 countries, millions of photos, public records, indexes and additional resources that span 5 centuries.
http://www.familysearch.org - Free family history, family tree, and genealogy records and resources from around the world.
https://www.findagrave.com/ - Free website that allows the public to search and add to an online database of cemetery records.
www.chartiers.com/ - Online books and links to resources.
www.cornerstonegenealogy.com - The Cornerstone Genealogical Society is a non-profit unincorporated organization dedicated to preserving the genealogical history of Greene County, Pennsylvania.
https://www.facebook.com/genealogicalsocietyofsouthwesternpennsylvania/- The society was formed so members might assist one another in discovering and preserving information about their families. A non-profit, educational organization, it is primarily concerned with the genealogical records of Southwestern Pennsylvania.
https://powerlibrary.org/collections/#.YSZ3Ds8pCUk -PA PowerLibrary provides thousands of digitized documents and photographs from unique collections in libraries across Pennsylvania.
www.pagenweb.org/ - Part of the U.S. GenWeb Project.
www.digitalarchives.state.pa.us - This system is designed to facilitate citizen access to archival records created by all branches and levels of PA State Government.
http://digital.library.pitt.edu/pittsburgh/ - Historic Pittsburgh is a comprehensive collection of local resources that supports personal and scholarly research of the western PA area.
www.ellisislandrecords.org - Search ships' manifests.
www.CyndisList.com/ - "A categorized & cross-referenced index to genealogical resources on the Internet."