United States Air Force Academy -- Maps; Soils -- Colorado -- Colorado Springs -- Maps.
Base maps are orthophotographs prepared by the U.S. Department of the Interior, Geological Survey, from 1974 and 1975 aerial photography. "Soil series and soil legends for the Air Force Academy"--T.p. verso.
Magnetic anomalies -- North America -- Maps; Magnetic anomalies -- Hawaii -- Hawaii Island -- Maps; Geomagnetism -- North America -- Maps; Geomagnetism -- Hawaii -- Hawaii Island -- Maps