Pennsylvania Geological Survey - Historical Photographs

Active Filters:
  • Location Covered = Huntingdon
  • Date = 1970-05-22

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.

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McKenzie Formation
Oriskany sandstone quarry
Oriskany sandstone quarry
Oriskany sandstone quarry, Pittsburgh Plate Glass
Pittsburgh Plate Glass quarry, Oriskany sandstone
Pittsburgh Plate Glass sand quarry
"Silurian Time Zone" sign