Northeast Washington '59 (WA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Hunting.
Date flown 09/59-10/59
Line spacing 0.4 (km)
Altitude 152.4 (m) above ground
Total distance 6,349 (km)
References
Counties Ferry - Okanogan
Overlapping surveys

Data: Magnetic (M-Dz)