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11. Trenton West Quadrangle, New Jersey - Pennsylvania, 7.5 minute series (topographic) (1981)
1955. United States Geological Survey. A scanned USGS 1:24,000 topographic map. United States Geological Survey.
12. Trenton West Quadrangle, Pennsylvania - New Jersey, 7.5 minute series (topographic) (1955)
1955. United States Geological Survey. A scanned USGS 1:24,000 topographic map. United States Geological Survey.
13. Trenton West Quadrangle, Pennsylvania - New Jersey, 7.5 minute series (topographic) (1970)
1955. United States Geological Survey. A scanned USGS 1:24,000 topographic map. United States Geological Survey.