Bedrock geology of parts of Putnam and Westchester Counties, New York, and Fairfield County, Connecticut [cartographic material] / by John James Prucha, David M. Scotford and Robert M. Sneider.
Relief shown by contours and spot heights. Depths shown by soundings. "Contour interval 10 feet." "Mapped, edited and published by the Geological Survey." "Control by USGS and USC&GS, USCE and Connecticut Geodetic Survey." Location map on envelope. Includes declination diagram, mapping credit diagram, and location map.
- Geological Survey, New York State Museum and Science Service :
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