Pennsylvania Geological Survey - Historical Photographs

Active Filters:
  • Original Format = Photographs
  • Location Covered = Allegheny
  • Date = 1927-10-01

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
Displaying 12 items
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Allegheny River
Allegheny River
Rivers and Streams
Allegheny River, Freeport quadrangle., Looking upstream at Natrona, Pa. Refuse pits from Pennsylvania Salt Manufacturing Company in foreground.
Carmichaels debris at Natrona
Carmichaels debris at Natrona
Environmental Geology
Carmichaels debris at Natrona, Pa. Freeport quadrangle., Washed from top of hill half burying the house. The timber barricades are shown in the background.
Cliff section, Natrona
Cliff section, Natrona
Stratigraphy
Cliff section, Natrona, Pa. Freeport quadrangle., Note especially the Carmichaels Formation capping the cliff.
Cliff section, Natrona
Cliff section, Natrona
Stratigraphy
Cliff section, Natrona, Pa. Freeport quadrangle.
Natrona Sand and Gravel Company
Natrona Sand and Gravel Company
Nonmetallic Mineral Resources
Natrona Sand and Gravel Company, Freeport quadrangle.
Natrona Sand and Gravel Company
Natrona Sand and Gravel Company
Nonmetallic Mineral Resources
Natrona Sand and Gravel Company, Freeport quadrangle.
No 4. Dam, Allegheny River at Natrona, Pa.
No 4. Dam, Allegheny River at Natrona, Pa.
Engineering
No 4. Dam, Allegheny River at Natrona, Pa., Freeport quadrangle., Braeburn Alloy Steel Co. across river.
No. 4 Lock, Allegheny River at Natrona, Pa.
No. 4 Lock, Allegheny River at Natrona, Pa.
Engineering
No. 4 Lock, Allegheny River at Natrona, Pa., Freeport quadrangle., Looking upstream.
No. 4 Lock, Allegheny River at Natrona, Pa.
No. 4 Lock, Allegheny River at Natrona, Pa.
Engineering
No. 4 Lock, Allegheny River at Natrona, Pa., Freeport quadrangle., Braeburn Alloy Steel Co. across river.
No. 4 Lock, Allegheny River at Natrona, Pa.
No. 4 Lock, Allegheny River at Natrona, Pa.
Engineering
No. 4 Lock, Allegheny River at Natrona, Pa., Freeport quadrangle., Looking upstream.
Terrace debris from top of hill
Terrace debris from top of hill
Environmental Geology
Terrace debris from top of hill, Freeport quadrangle., Storage tanks in background show horizon of springs of Natrona Water Company.
Terrace formation
Terrace formation
Stratigraphy
Terrace formation, Freeport quadrangle., Natrona Sand and Gravel Company