Hampden County, Massachusetts Historic map, Library of Congress

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.