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

Topography at Valley Forge

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

Topography, Clymer Township

Subject	Topography
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-15

Topography east on county line from Possum Hollow

Subject	Topography
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1926-10-04

Topography near Energy

Subject	Topography
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1926-10-01

Topography of Greene Formation

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-30

Topography of Greene Formation

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-29

Topography of lower part of Conemaugh

Subject	Topography
Creator	Johnson, Meredith E., 1897-
Date	1922-08-10

Topography of Permian beds

Subject	Geomorphology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1928-06-17

Topography of uplands near State Line Dam

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-06-07

Topography one mile north of Port Matilda

Subject	Topography
Creator	Johnson, Meredith E., 1897-
Date	1923-05-04

Topography southeast of DuBois

Subject	Topography
Creator	Johnson, Meredith E., 1897-
Date	1923-05-04

Topography south of Hummelstown

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

Topography south of Kirby

Subject	Topography
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1926-09-26

Topography south of Milford

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-08-26

Top view of Cryptozoon heads

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1956

To show amount of stripping (glacial)

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-08-01

To show irregular character of Saltsburg sandstone (note lensing)

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1925-06-04

To show relation of minor anticline to unfolded Medina

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

To show relation of soft slate zone to Blue Mountains

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

To show shattered face of rock far back of intended face

Subject	Structure-Faults
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

To show size of block hoisted

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-08-01

Towanda Valley

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1934-06-14

Toward Winburne from entrance to Winburne #45 Mine

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1940-10-17

Town of Brave

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1926-09-17

Township road through a glacial deposit

Subject	Glacial Geology
Creator	Graeber, Charles Karsner, 1896-
Date	1934-08-02

Tract overturned by flood

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1942-09-04

Transferring river coal from flats to trucks

Subject	Nonmetallic Mineral Resources

Transformers for power plant at State Line Dam

Subject	Engineering Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-06-07

Transporting coal a half mile by cable

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

Transporting molten metal in crucibles

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

Transporting molten metal in crucibles

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

Trap quarry

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

Trap quarry

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

Trap quarry, abandoned, dredge submerged

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

Trap quarry of J. T. Dyer

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

Trap quarry of J. T. Dyer

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

Trap rock quarry, General Crushed Stone Company

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-11-14

Trap rock quarry of General Crushed Stone Company

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-11-14

Trees barked for tannery

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

Trees uprooted by wave erosion

Subject	Rivers and Streams
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1928-10-10

Tree wedging; diabase

Subject	State Parks
Creator	Bolles, William H.
Date	circa 1970

Tree wedging; diabase

Subject	State Parks
Creator	Bolles, William H.
Date	circa 1970

Tree wedging; diabase break-up

Subject	State Parks
Creator	Bolles, William H.
Date	1971

Tree wedging in diabase

Subject	State Parks
Creator	Bolles, William H.
Date	1970

Trenton limestone at Union Furnace

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-10-17

Trenton (?) limestone, J. E. Thropp Company quarry

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

Trenton (?) limestone quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-10-04

Trenton (?) limestone quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-10-06

Triangular faulting in strata

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

Triassic border fault (?)

Subject	Structure
Creator	Geyer, Alan R.
Date	1971