EarthWorks Geospatial Catalog

Surficial geologic map of the South Twin Mountain 7.5 quadrangle, New Hampshire / by Carol T. Hildreth.

Relief shown by contours and spot heights. "Contour interval 40 feet." "Mapped in 2002. Reconnaissance mapping of part of area in 1984"--Page [1] of booklet. "Mapped, edited and published by the Geological Survey. Control by USGS and USC&GS. Topography by photogrammetric methods from aerial photographs taken in 1964. Field checked 1967." "Interior--Geological Survey, Reston, Virginia--1999." "44071-B5-TF-024." "NE/4 Franconia 15สน quadrangle."
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