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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 (189)
Subject
Geomorphology (189)
Location Covered
Dauphin (19)
Tioga (13)
Bradford (10)
Jefferson (10)
Cambria (8)
Centre (8)
Clearfield (8)
Erie (8)
Monroe (8)
Somerset (8)
Original Format
Photographs (189)
Date
1934-08-01 (10)
1930-08-02 (7)
1934-06-14 (7)
1931-01-01 (6)
1931-10-01 (6)
1932-05-13 (6)
1927-09-10 (5)
1931-08-01 (5)
1937-08-14 (5)
1933-07-18 (4)
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Pennsylvania Geological Survey - Historical Photographs
189 items
189 items
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