EarthWorks Geospatial Catalog

Ashby quadrangle, Massachusetts--New Hampshire [cartographic material] : 7.5 minute series (topographic) / mapped, edited, and published by the Geological Survey ; Commonwealth of Massachusetts Department of Public Works ; control by USGS, NOS/NOAA, Massachusetts Geodetic Survey .

Description
"Topography by planetable surveys 1943 and 1944." Relief shown by contours and spot heights. "Contour interval 10 feet." "AMS 6669 III NE--Series V814." "N4237.5-W7145/7.5." Includes quadrangle location map.
Publisher
Geological Survey ;
Year
1968-01-01T00:00:00Z
Held by
MIT
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