Ullmer, E., 1975, Molybdenum trace analysis of certain phreatophytes as a biochemical prospecting method in the sedimentary basins of southern Arizona: Tucson, University of Arizona, M.S. thesis, 73 p.
Casa Grande area
Ullmer, E., 1978, Sacaton mine area, Pinal County, Arizona, in Lovering, T.G., and McCarthy, J.H., Jr., eds., Conceptual models in exploration geochemistry; the Basin and Range province of the western United States and northern Mexico: Journal of Geochemical Exploration, v. 9, nos. 2-3, p. 235-236.
U.S. Geological Survey, 1980, Composite aeromagnetic map of the Papago area, Arizona: U.S. Geological Survey Open-File Report 80-0056, 1 sheet, scale 1:125,000.
U.S. Geological Survey, 1979, Land use and land cover, 1972-74, Tucson, Arizona: U.S. Geological Survey Land Use Series Map L-43, 1 sheet, scale 1:250,000.
U.S. Bureau of Reclamation, 1977, Central Arizona Project, Geology and ground-water resources report, Maricopa and Pinal Counties, Arizona: U.S. Bureau of Reclamation, 2 v., 105 p., 183 sheets, scales 1:250,000 and 1:625,000.
U.S. Geological Survey, U.S. Dept. of Agriculture, and Arizona Water Commission, 1973, Map of irrigated land in the Phoenix area, Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-845-B, 1 sheet, scale 1:250,000.
Turner, R.M., 1976, Detection of short-term changes in vegetation of southern Arizona, in Williams, R.S., Jr., and Carter, W.D., eds., ERTS-1, A new window on our planet: U.S. Geological Survey Professional Paper 929, p. 246-248.
Turner, R.M., 1974, Map showing vegetation in the Phoenix area, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-845-I, 1 sheet, scale 1:250,000.
Titley, S.R., ed., 1982, Advances in geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, 560 p.
Titley, S.R., and Anthony, E.Y., 1989, Laramide mineral deposits in Arizona, in Jenney, J.P., and Reynolds, S.J., eds., Geologic evolution of Arizona: Arizona Geological Society Digest 17, p. 485-514.