Northeast San Antonio (TX)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Aero Service Corporation
Date flown ?/67-?/68
Line spacing 2 (km)
Altitude 548.6 (m) by barometer measurement
Total distance 3,983 (km)
References
Counties Bastrop - Caldwell - DeWitt - Fayette - Gonzales - Lavaca - Lee - Washington
Overlapping surveys

Data: Magnetic (M-Dz)