AZGS has posted two classic statewide geophysical maps at our online document repository for free downloading:
Ref: Sauck, W.A. and Sumner, J.S., 1970, Residual Aeromagnetic Map of Arizona. University of Arizona Geophysical Society, 1 map sheet, map scale 1:1,000,000.
Ref: Lysonski, J.C., Sumner, J.S., Aiken, C. and Schmidt, J.S., 1980, Residual Bouguer Gravity Anomaly Map of Arizona (IGSN 71). University of Arizona Geophysical Society, 1 map sheet, map scale 1:1,000,000.
We greatly appreciate the permission from University of Arizona Geoscience Dept. Chair Pete Reiners and the UA Geophysical Club to make these available.