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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 (112)
Subject
Stratigraphy (30)
Structure-Folds (26)
Topography (17)
Nonmetallic Mineral Resources (8)
Caves (7)
Cities, Towns, and Buildings (7)
Structure-Kink Bands (7)
Miscellaneous (6)
Sedimentation (2)
Structure (1)
Location Covered
Mifflin (112)
Original Format
Photographs (112)
Date
1921-07-01 (20)
1921-08-16 (15)
1921-01-01 (9)
1924-04-01 (8)
1973-09-07 (7)
1923-07-09 (4)
1925-07-16 (4)
1931-06-25 (4)
1934-06-22 (4)
1936-08-01 (4)
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Pennsylvania Geological Survey - Historical Photographs
112 items
112 items
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