The limestones (Middle Ordovician) of Jefferson County, New York [cartographic material] / John H. Johnsen.
Relief shown by contours and spot heights. Depths shown by soundings. "Contour interval 10 feet." "Geologic mapping 1954-1956." Legend on "Southern portion" sheet. Location map on envelope. Text includes: "Analyzing and testing of samples" by Wayne E. Brownell. Date on text, 1971. Includes location and index maps, declination diagram and text.
- New York State Museum and Science Service, Geological Survey :
- Held by
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