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- Maps3
- Gannett, Henry, 1846-19143
- Wilson, Herbert M. (Herbert Michael), 1860-1920✖[remove]3
- Gannett, Samuel S. (Sameul Stinson), 1861-19392
- Geological Survey of New Jersey2
- Muldrow, Robert2
- Sutton, Frank2
- Geological Survey (U.S.)1
- Thompson, A. H. (Almon Harris), 1839-19061
Current results range from 1883 to 1902