Pennsylvania Geological Survey - Historical Photographs

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This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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Allegheny River
Allegheny River
Rivers and Streams
Allegheny River, Freeport quadrangle., Below Kiskiminetas Junction from Freeport-Kittanning Road.
Allegheny River
Allegheny River
Topography
Allegheny River, north edge of Port Allegheny.
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.
Allegheny River
Allegheny River
Topography
Allegheny River, near Magee Station.
Allegheny River
Allegheny River
Rivers and Streams
Allegheny River, Freeport quadrangle., Looking upstream from river bridge at Freeport.
Allegheny River and silica sand quarry
Allegheny River and silica sand quarry
Surface Water
Allegheny River and silica sand quarry, south from Emlenton
Allegheny River Gorge
Allegheny River Gorge
Surface Water
Allegheny River Gorge north of Emlenton
The Alliance Brick Company plant
The Alliance Brick Company plant
Nonmetallic Mineral Resources
The Alliance Brick Company plant, one mile west of Darlington, Beaver County.
The Alliance Brick Company plant
The Alliance Brick Company plant
Cities, Towns, and Buildings
The Alliance Brick Company plant, one mile west of Darlington, Beaver County. Began operations April 15, 1925.
Aloe Coal Company strip pit
Aloe Coal Company strip pit
Stratigraphy
Aloe Coal Company strip pit north of Pennsylvania Route 980 at McAdams
Aloe Coal Company strip pit
Aloe Coal Company strip pit
Stratigraphy
Aloe Coal Company strip pit north of Pennsylvania Route 980 at McAdams
Along creek west of Gapville
Along creek west of Gapville
Surface Water
Along creek west of Gapville. Laurel in blossom.
Along Freeport-Leechburg Road
Along Freeport-Leechburg Road
Topography
Along Freeport-Leechburg Road, Freeport quadrangle., Looking toward Allegheny River.
Along Interstate 80 on the Appalachian Plateau
Along Interstate 80 on the Appalachian Plateau
Topography
Along Interstate 80 on the Appalachian Plateau
Along Leechburg-Freeport Road
Along Leechburg-Freeport Road
Topography
Along Leechburg-Freeport Road, Freeport quadrangle., Looking toward Allegheny River.
Along Route 322 boulder field
Along Route 322 boulder field
Igneous Rocks
Along Route 322 boulder field, anorthosite
Alpha Chi Sigma House
Alpha Chi Sigma House
Cities, Towns, and Buildings
Alpha Chi Sigma House, State College. Ordovician limestone.
Alpha Gamma Rho House, Ordovician limestone
Alpha Gamma Rho House, Ordovician limestone
Cities, Towns, and Buildings
Alpha Gamma Rho House, Ordovician limestone. State College.
"Alpha Pass" waterfall into gorge
"Alpha Pass" waterfall into gorge
State Parks
"Alpha Pass" waterfall into gorge, Slippery Rock Creek at McConnells Mill State Park
An alternative figure showing pinching out of beds
An alternative figure showing pinching out of beds
Stratigraphy
An alternative figure showing pinching out of beds, New Cumberland quadrangle