Three Rivers (Freer) (TX)

Survey type M-D (magnetic; collected in digital form)
Flown by Geodata International, Inc.
Date flown 12/74
Line spacing 1.6 (km)
Altitude 152.4 (m) above ground
Total distance 2,526 (km)
References
Counties Duval - La Salle - Live Oak - McMullen - Webb
Overlapping surveys

Data: Magnetic, radiometric (M/R-D)