John Franklin Carll (1826-1904)
Inscription
Pioneer petroleum geologist and engineer, Carll originated many standard oil industry practices, including accurate drilling records, correlating and mapping sub-surface reservoir rocks, and explaining the increased productivity resulting from reservoir flooding. In the 2nd Geological Survey of Pennsylvania (1875), he provided basic explanations of northwestern Pa. surface and subsurface geology.
He lived and worked here from 1864 until his death.
Location
Sources
More markers in Venango
Venango Path
A major Indian path from the Forks of the Ohio (Pittsburgh) to Venango (Franklin) was located just west of here.
The Crawford Family
Emlenton, PA
Eben Crawford (1821-1897) was an iron foundry operator and early oil and gas producer.
Old Garrison
Franklin, PA
Built in 1796 to replace Fort Franklin.
Fort Venango
Franklin, PA
To assert control over the area, Fort Venango was built near this point by the British in 1760.
Pithole
Created in 1865 by the discovery of oil.