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Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents
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Contributing Institution
Pennsylvania Geological Survey (5220)
Subject
Nonmetallic Mineral Resources (912)
Stratigraphy (880)
Topography (553)
Cities, Towns, and Buildings (443)
Mineral Resources-Coal (257)
Surface Water (198)
Geomorphology (189)
Structure-Folds (142)
Glacial Geology (139)
Interstate Highway (138)
Location Covered
Dauphin (576)
Lebanon (261)
Allegheny (210)
Clearfield (200)
Lancaster (192)
Northampton (182)
York (148)
Luzerne (145)
Mifflin (112)
Original Format
Photographs (5220)
Date
1971-01-01 (79)
summer 1926 (58)
1923-08-23 (52)
1972-09-21 (49)
1921-07-01 (43)
1970-01-01 (43)
1923-08-22 (34)
1923-08-21 (33)
1920-01-01 (31)
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Pennsylvania Geological Survey - Historical Photographs
5,220 items
5,220 items
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