Title in lower margin: Hampden Co., Mass. : N4159.5-W7207.5/21.5 x 57.5, 1976. "Compiled in 1976 from USGS 1:24,000-scale topographic maps dated 1958-1973." "Planimetry revised from aerial photographs taken 1975." Available also through the Library of Congress Web site as a raster image.
United States. Soil Conservation Service
1976
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