North Ouachita Trend (TX)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Aero Service Corporation
Date flown ?/67-?/68
Line spacing 2 (km)
Altitude 670 (m) by barometer measurement
Total distance 19,720 (km)
References
Counties Bryan - Choctaw - Jefferson - Love - Marshall - Clay - Collin - Cooke - Dallas - Delta - Denton - Fannin - Grayson - Hopkins - Hunt - Jack - Kaufman - Lamar - Montague - Parker - Rains - Rockwall - Tarrant - Van Zandt - Wise
Overlapping surveys

Data: Magnetic (M-Dz)