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

Second Mountain at Dauphin

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

Second Mountain below Dauphin

Subject	Structure
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931-10

Second Mountain from west shore

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1931-07-01

Second Mountain from west shore

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1931-07-01

Sharp monoclinal fold

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

Side-view, Grand Ballroom, Indian Echo Caverns

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

Silurian, Medina

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-08-03

Sinkhole

Subject	Sinkholes
Creator	Bolles, William H.
Date	1973-11-01

Sinkhole

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971-04-16

Sinkhole

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971-04-16

Sinkhole along Route 322

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971-03-16

Sinkhole along Route 322

Subject	Sinkholes
Date	1971-04-16

Sinkhole at northeast corner of intersection of 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole at northeast corner of intersection of Route 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole at northeast corner of intersection of Route 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole at northeast corner of intersection of Route 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole at northeast corner of intersection of Route 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole at northeast corner of intersection of Route 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole at northeast corner of intersection of Route 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole at northeast corner of intersection of Route 422 and Quarry Road

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971

Sinkhole, Derry Township

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971

Sinkhole, Derry Township

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971

Sinkhole, Derry Township

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971

Sinkhole, Derry Township

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971

Sinkhole, Derry Township

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971

Sinkhole outline in fields along Route 322

Subject	Sinkholes
Creator	Bolles, William H.
Date	Winter 1971

Sinkhole outline in fields along Route 322

Subject	Sinkholes
Creator	Bolles, William H.
Date	Winter 1971

Sinkholes

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971-03-02

Sinkholes

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971-03-02

Sinkholes

Subject	Sinkholes
Creator	Bolles, William H.
Date	1970-07

Sinkholes

Subject	Sinkholes
Creator	Bolles, William H.
Date	1970-04-08

Sinkholes along Route 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971-02-26

Sinkholes along Route 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971-02-26

Sinkholes along Route 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1971-02-26

Sinkholes at Milton Hershey Medical Center

Subject	Sinkholes
Creator	Bolles, William H.
Date	1970

Sinkholes Derry Township

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1972

Sinkholes developed along Route 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	Winter 1971

Sinkholes developed along Route 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	Winter 1971

Sinkholes developed along Route 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	Winter 1971

Sinkholes northeast corner at intersection of Routes 422 and 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1972

Sinkholes northeast corner at intersection of Routes 422 and 39

Creator	Geyer, Alan R.
Date	1972

Sinkholes northeast corner of Routes 422 and 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1972

Sinkholes northwest corner of Routes 422 and 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1972

Sinkhole target pattern

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971-03-16

Slag pile

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

South from Peters Mountain

Subject	Geomorphology
Creator	Willard, Bradford, 1894-
Date	1935-05-31

South wall of eastern quarry

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

South wall of U. S. Steel's Quarry near Hershey

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

Spring Creek Limestone Company quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-09-17

Spring Creek Limestone Company quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-09-17