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1887. Harvard Map Collection, Harvard College Library. This layer is a digital raster graphic of the historic 15-minute USGS topographic quadrangle map of Barre, Massachusetts. The suvery (ground condit...
1988. Geological Survey (U.S.). This layer is a digital raster graphic of the 7.5 x 15 Minute USGS topographic map of the Barre, Massachusetts quadrangle, 1988. Scale 1:25,000. Th... United States Geological Survey.
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.
1989. Geological Survey (U.S.). This layer is a digital raster graphic of the 30 x 60 Minute USGS topographic map of the Holyoke, Massachusetts quadrangle, 1989. Scale 1:100,000. ... 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 North Brookfield, Massachusetts quadrangle, 1982. Scale 1... United States Geological Survey.
1885. Harvard Map Collection, Harvard College Library. This layer is a digital raster graphic of the historic 15-minute USGS topographic map of the Worcester, Massachusetts quadrangle. The survey date (...
1983. Geological Survey (U.S.). This layer is a digital raster graphic of the 7.5 x 15 Minute USGS topographic map of the Worcester North, Massachusetts quadrangle, 1983. Scale 1:... United States Geological Survey.