Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

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Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

Across Susquehanna at gap of Second Mountain

Subject	Surface Water
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931-08-01

Across Susquehanna Gap in Second Mountain

Subject	Surface Water
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Annville limestone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1952

Annville limestone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1952

Annville limestone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1952

Annville limestone outcrop, East Quarry

Subject	Nonmetallic Mineral Resources
Creator	Geyer, Alan R.
Date	1953

Basal Silurian ledge

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1932-09-02

Base of second cooling tower

Subject	Cities, Towns, and Buildings
Creator	Geyer, Alan R.

Basic X-ray Unit

Subject	Miscellaneous
Creator	Koppe, Edwin F.
Date	1957

Bethlehem Mines Company Quarry

Subject	Nonmetallic Mineral Resources
Creator	Hickok, W. O. (William Orville), 1905-
Date

Bethlehem Steel Company, Steelton plant

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Bethlehem Steel Company, Steelton plant ore piles

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Bethlehem Steel plant

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1957

Bethlehem Steel quarry

Subject	Nonmetallic Mineral Resources
Creator	Geyer, Alan R.
Date	1972-11-01

Bethlehem Steel Works

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1957

Bob Sponseller in the lab

Subject	Survey Staff
Creator	Koppe, Edwin F.
Date	1964

Boulder field

Subject	Engineering Geology
Creator	Bolles, William H.
Date	197?

Boulder field

Subject	Engineering Geology
Creator	Bolles, William H.
Date	197?

Bradley Limestone Quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Bradley Limestone Quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Bradley Limestone Quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Bradley Limestone Quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Broken column, Indian Echo Caverns

Subject	Caves
Creator	Bolles, William H.
Date	1970-11

Brownstone (Hummelstown)

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Brownstone quarry

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Brownstone quarry at Waltonville

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Brownstone quarry showing steep dip

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Buffalo Springs Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Buffalo Springs Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Buffalo Springs Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1966

Buffalo Springs Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Camp on Twin Island

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-10-01

Camp on Twin Island

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-10-01

Camp on Twin Island

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-10-01

Catholic Church

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1928-08-30

Cave formed by fold in limestone

Subject	Stratigraphy-Weathering
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Chet Shepps in Survey's Core Library

Subject	Survey Staff
Creator	Koppe, Edwin F.
Date	1966

Christ Evangelical Lutheran Church

Subject	Cities, Towns, and Buildings
Creator	Barnsley, E. R.
Date	1932-01-01

Christ Evangelical Lutheran Church

Subject	Cities, Towns, and Buildings
Creator	Barnsley, E. R.
Date	1932-01-01

Clark Creek Dam

Subject	Surface Water
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1938-04-26

Clark Creek Dam

Subject	Surface Water
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1938-04-26

Clark Creek Dam

Subject	Surface Water
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1938-04-26

Clark Creek Dam

Subject	Surface Water
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1938-04-26

Clark's Creek

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928

Clark's Creek

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928

Clark's Creek

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928

Clarks Creek

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clarks Creek

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-08-01

Clarks Creek

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clarks Creek dam

Subject	Engineering Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-08-01