Eastport-Calais (ME)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 11/67
Line spacing 0.8 (km)
Altitude 121.92 (m) above ground
Total distance 1,988 (km)
References
Counties Washington
Overlapping surveys

Data: Magnetic (M-Dz)