Arizona Department of Water Resources, 1999, Third Management Plan for Santa Cruz Active Management Area, 2000-2010: Arizona Department of Water Resources, 404 p.
Gellenbeck, D.J., and Coes, A.L., 1999, Ground-water quality in alluvial basins that have minimal urban development, south-central Arizona: U.S. Geological Survey Water-Resources Investigations Report 99-4005, 27 p.
Turner, S.F., and others, 1943, Ground-water resources of the Santa Cruz Basin, Arizona: U.S. Geological Survey Open-File Report [unnumbered], Tucson, Ariz., May 14, 1943,  p., 3 sheets, scales 1:23,000, 1:200,000, and 1:500,000.
Horstman, K.C., 1996, Geological, remote sensing, and geophysical investigation of the greater Arivaca region, Pima and Santa Cruz Counties, Arizona: Tucson, University of Arizona Ph.D. dissertation, 106 p., 3 sheets, scale 1:100,000.
Riggs, N.R., Hon, K.A., and Haxel, G.B., 1994, Early to Middle Jurassic magmatic arc rocks of south-central and southeastern Arizona, in Thorman, C.H., and Lane, D.E., eds., USGS Research on Mineral Resources - 1994, Part B - Guidebook for Field Trips, Ninth V.E. McKelvey Forum on Mineral and Energy Resources: U.S. Geological Survey Circular 1103-B, p. 7-13.
Bouse, R.M., Ruiz, Joaquin, Titley, S.R., Tosdal, R.M., and Wooden, J.L., 1999, Lead isotope compositions of Late Cretaceous and early Tertiary igneous rocks and sulfide minerals in Arizona: Implications for the sources of plutons and metals in porphyry copper deposits: Economic Geology, v. 94, no. 2, p. 211-244.
Drewes, Harald, 1979, Preliminary tectonic map of southeast Arizona: U.S. Geological Survey Open-File Report 79-0775, 2 sheets, scale 1:125,000.
Drewes, Harald, 1997, Geologic map of the Arivaca quadrangle and vicinity, Pima and Santa Cruz Counties, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-2320, 1 sheet, scale 1:24,000.
Reeter, R.W., and Cady, C.V., 1982, Maps showing ground-water conditions in the Avra/Altar Valley area, Pima and Santa Cruz Counties, Arizona - 1981: Arizona Department of Water Resources Hydrologic Map Series Report no. 7, 2 sheets, scale 1:125,000.
Farrell, M.M., and Spoerl, P.M., 1995, Historic small mining sites: Research and management potential, in Farrell, M.M., and others, Tearing up the ground with splendid results: Historic mining on the Coronado National Forest: U.S. Department of Agriculture, Forest Service, Southwestern Region, Heritage Resources Management Report no. 15, p. 27-29.