Trackline map of multichannel data collected in May 1977 off of the Washington/Oregon coast /

by Mann, Dennis M., Snavely, P. D. (Parke Detweiler), 1919-2003
[Reston, Va.] : U.S. Geological Survey, 1984

Gamma-ray, magnetic, and topographic data for parts of the Colorado Front Range /

[Reston, VA] : Denver, CO : The Survey ; For sale by USGS Information Services (Open-File Report Sales), 2001