Yellowstone '62 (WY-ID-MT)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 10/62
Line spacing 1.61 (km)
Altitude 3657.6 (m) by barometer measurement
Total distance 3,211 (km)
References
Counties Fremont - Gallatin - Park - Teton
Overlapping surveys

Data: Magnetic (M-Dz)