Massachusetts Coop West (MA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by U.S. Geological Survey
Date flown 12/65
Line spacing 1.6 (km)
Altitude 152.4 (m) above ground
Total distance 724 (km)
References
Counties Berkshire - Franklin - Hampden - Hampshire
Overlapping surveys

Data: Magnetic (M-Dz)