An index of all USGS geologic maps and hydrogeologic publications for Massachusetts, cross-referenced and indexed by town and 7.5' quadrangle. This is an extremely valuable resource for finding...
Download a PDF map showing which towns are in which 7.5' quadrangles.
A Google Earth KMZ file showing the locations of 7.5' quadrangles in Massachusetts
MassGIS is the geospatial data clearinghouse for Massachusetts. They distribute LiDAR, DEMs, and other elevation data, in addition to soils maps, hydrologic, cultural, environmental, and...
The MA Geological Survey
Department of Geosciences
269 Morrill Science Center
University of Massachusetts
611 North Pleasant Street
Amherst, MA 01003-9297