Cemetery Headstone Transcriptions-Western Pennsylvania Clarion, Forest, Venango and Westmoreland counties
Cemetery Junction - Pennsylvania cemeteries listed alphabetically; over 42,000 listings
Interment.net-Pennsylvania
Lehigh Valley Cemeteries
Union Soldiers from Pennsylvania Interred in the National Cemetery, Arlington, Virginia, 1864-65
Stones of Faith; Pennsylvania Germans and their Gravestones
The Tombstone Transcription Project - cemeteries for Pennsylvania many cemeteries here

Additional Resources

Pennsylvania Obituaries enter your Pennsylvania ancestor's name to search the world's largest newspaper archive; over 12 million newspaper pages
Pennsylvania Birth Records
Pennsylvania Marriage Records
Pennsylvania Divorce Records
Pennsylvania Death Records