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

Skip to search Skip to main Skip to footer

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

Unconformity, west end of Shoo Fly Tunnel, south side of B&O Railroad

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-08-10

Underground limestone mine

Subject	Nonmetallic Mineral Resources
Creator	Geyer, Alan R.
Date	1952

Underground mine collapse

Subject	Engineering Geology
Creator	Bolles, William H.
Date	1972-11-09

Underground mine collapse

Subject	Engineering Geology
Creator	Bolles, William H.
Date	1972-11-09

Underground quarrying of slate

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-10-15

Union Canal

Subject	Miscellaneous
Creator	Horich, Franklin J. W.
Date	1920-05-31

Union Deposit Mall, Lower Paxton Township

Subject	Environmental Geology
Creator	Bolles, William H.
Date	1973-05-10

Universal Gypsum & Lime Company quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-06-29

University of Pittsburgh class

Subject	Miscellaneous
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-07-31

Unloading boom and coal storage

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading boom and coal storage

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading boom and coal storage

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading boom and coal storage

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading boom for coal

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading boom for coal

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading coal barges on Monongahela River

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading coal barges on Monongahela River

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading river coal

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

Unloading river coal along Susquehanna River

Subject	Mineral Resources-Coal
Creator	Sisler, James D. (James Donaldson), 1894-
Date	Spring 1927

Unloading station for sand barges

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading station for sand barges

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-07

Unloading washed sand from barges and dumping on storage pile

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

Upland (Harrisburg peneplain?) and mountain peneplain

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-05-23

Upland (Harrisburg peneplain?) and mountain peneplains

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-05-23

Upland (Harrisburg peneplain?) looking south from hilltop

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-05-23

Upland hilltops

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1927-07-09

Upper and Lower Freeport coals

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper and Lower Freeport coals

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper bench of "B" coal

Subject	Mineral Resources-Coal
Creator	Shepps, Vincent C. (Vincent Chester), 1928-
Date	1960

Upper bench of "B" Coal

Subject	Mineral Resources-Coal
Creator	Shepps, Vincent C. (Vincent Chester), 1928-
Date	1960

Upper bench of quarry in Catteraugus Group

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-08-27

Upper blue Mauch Chunk limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-10-08

Upper Conemaugh Formation

Subject	Stratigraphy
Creator	Craft, Jesse L.

Upper Connoquenessing sandstone quarry

Subject	Economic Uses
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-10-03

Upper Devonian, Lock Haven Formation

Subject	Stratigraphy
Creator	Berg, Thomas M.
Date	1976

Upper end of Independence Island

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-10-01

Upper end of Independence Island

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-10-01

Upper end of island cleared of foliage by ice

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

Upper end of Twin Island shows effect of ice jam

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

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-08-01

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-09-18

Upper Freeport coal

Subject	Mineral Resources-Coal
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper Freeport coal beside road near south end of bridge

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

Upper Freeport coal, clay and limestone

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1923-05-22

Upper Freeport coal crop in stream bed

Subject	Mineral Resources-Coal
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-09-18