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 :
- Held by
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