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Primary view of Monticello Quadrangle
Geological Survey (U.S.)
1965
Primary view of Lafayette Quadrangle
Geological Survey (U.S.)
1960
Primary view of Cason Quadrangle
Geological Survey (U.S.)
1980
Primary view of Harvard Quadrangle
Geological Survey (U.S.)
1976
Primary view of Pittsburg Quadrangle
Geological Survey (U.S.)
1960
Primary view of Leesburg Quadrangle
Geological Survey (U.S.)
1960
Primary view of New Hope Quadrangle
Geological Survey (U.S.)
1965
Primary view of Newsome Quadrangle
Geological Survey (U.S.)
1980
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