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1989. Geological Survey (U.S.). This layer is a digital raster graphic of the 30 x 60 Minute USGS topographic map of the Boston, Massachusetts quadrangle, 1989. Scale 1:100,000. I... United States Geological Survey.
1987. Geological Survey (U.S.). This layer is a digital raster graphic of the 7.5 x 15 Minute USGS topographic map of the Medfield, Massachusetts quadrangle, 1987. Scale 1:25,000.... United States Geological Survey.
1982. Geological Survey (U.S.). This layer is a digital raster graphic of the 7.5 x 15 Minute USGS topographic map of the Milford, Massachusetts quadrangle, 1982. Scale 1:25,000. ... United States Geological Survey.