Northern Yellowstone '67 (WY-MT)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by U.S. Geological Survey
Date flown 06/67
Line spacing 1.6 (km)
Altitude 3658 (m) by barometer measurement
Total distance 3,234 (km)
References
Counties Carbon - Gallatin - Park - Park
Overlapping surveys

Data: Magnetic (M-Dz)