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

Arthrophycus burrows

Subject	Trace Fossils
Creator	Wells, Richard B.
Date	1969-08

Artificial waterfall

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-04-01

Artificial waterfall

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-04-01

Artificial waterfall

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-04-01

Asbestos

Subject	Nonmetallic Mineral Resources

A scene taken from Cedar Ledge at Camp Nepahwin

Subject	Topography
Creator	Dinsmore, Arch
Date	1921-06-28

Association of State Geologists

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1923-10-01

Association of State Geologists

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1923-10-01

Association of State Geologists at unconformity

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-13

Association of State Geologists Field Trip

Subject	Field Conferences and Other Meetings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-15

Association of State Geologists Field Trip

Subject	Field Conferences and Other Meetings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-13

Association of State Geologists Field Trip

Subject	Field Conferences and Other Meetings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-15

Association of State Geologists Field Trip

Subject	Field Conferences and Other Meetings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-15

Association of State Geologists Field Trip

Subject	Field Conferences and Other Meetings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-15

At base of (Mauch Chunk) (?) crossbedded sandstone etc.

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-08-21

At bottom fourteen foot unidentified sandstone base

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1941-08

At east end of long stripping south and southeast of Houtzdale

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

At Tamaqua Colliery

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-09-23

Austin Dam

Subject	Surface Water
Creator	Willard, Bradford, 1894-
Date	1935-07-06

Austin Dam

Subject	Surface Water
Creator	Willard, Bradford, 1894-
Date	1935-07-06

Autochthonous basal limestones of the Martinsburg Formation

Subject	Structure
Creator	Root, Samuel I.
Date	1972-09-21

Automobiles of American Institute Party at Marvine Breaker

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

Avondale marble, post office

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1927-07-26

A woodland road

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

Azalia

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

Azalia

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

Baker Caverns

Subject	Caves
Creator	Hickok, W. O. (William Orville), 1905-
Date	1932-03-01

Baker Caverns, Lodge

Subject	Caves
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-08-27

Baker Caverns, Lodge

Subject	Caves
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-08-27

Balanced Rock

Subject	State Parks
Creator	Way, John H.
Date	1973-03

Balanced Rock

Subject	State Parks
Creator	Way, John H.
Date	1973-03

Balanced Rock

Subject	State Parks
Creator	Way, John H.
Date	1973-03

Bald Eagle conglomerate

Subject	Stratigraphy
Creator	Bolles, William H.
Date	1970

Bald Eagle Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-03-07

Bald Eagle-Juniata contact

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-03-05

Bald Eagle meteorite

Subject	Petrology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1931-05-19

Bald Eagle meteorite

Subject	Petrology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1931-05-19

Bald Eagle meteorite found near Williamsport

Subject	Survey Staff
Date	1931-05-19

Bald Eagle sandstone

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1969-05-27

Bald Eagle Valley

Subject	Glacial Geology
Creator	Moyer, Forrest Theodore, 1906-

Bald Eagle Valley

Subject	Glacial Geology
Creator	Moyer, Forrest Theodore, 1906-

Baltimore gneiss

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1927-07-28

Baltimore gneiss

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1927-07-28

Baltimore gneiss?

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1927-07-28

Baltimore gneiss in roadcut

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1935-05-31

Bare Rock Quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1936-04-14

Bare Rock Quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-08-18

Bare Rock Quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-08-18

Barite locality

Subject	Mineralogy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1934-08-07

Barn of Cambrian red conglomerate

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1927-10-26