Eli Slifer

Historical marker location:

7055 Westbranch Highway, Kelly Township, Pennsylvania

( Marker is on Westbranch Highway (U.S. 15) 0.2 miles north of William Penn Drive (County Route 1018), on the right when traveling north.)

Marker installed: 1968

Pennsylvania was home to the first commercially drilled oil well in the world, which was drilled in 1859 near Titusville.