Corkhill, E.F., and Mason, D.A., 1996, A groundwater flow model of the Prescott Active Management Area [abs.], in Wanted: Water for rural Arizona, Arizona Hydrological Society Annual Symposium, Ninth, Prescott, Ariz., September 12-14, 1996, Extended abstracts: Arizona Hydrological Society, p. 93.
Mt. Union area
Arizona Department of Water Resources, 1999, Third Management Plan for Prescott Active Management Area, 2000-2010: Arizona Department of Water Resources, 394 p.
Langenheim, V.E., Hoffman, J.P., Blasch, K.W., Dewitt, Ed, and Wirt, Laurie, 2002, Preliminary report on geophysical data in Yavapai County, Arizona: U.S. Geological Survey Open-File Report 02-0352, 29 p.
Sanger, H.W., and Appel, C.L., 1980, Maps showing ground-water conditions in the Hassayampa area, Maricopa and Yavapai Counties, Arizona - 1978: U.S. Geological Survey Water-Resources Investigations Open-File Report 80-0584, 2 sheets, scale 1:125,000.
Arizona Department of Water Resources, 1991, Second Management Plan 1999-2000 Prescott Active Management Area: Arizona Department of Water Resources, [variously paged ?].
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.
DeWitt, Ed, 1987, Road log and trip guide - Day three, in DeWitt, Ed, ed., Proterozoic ore deposits of the southwestern U.S.; Guidebook prepared for Society of Economic Geologists Field Conference - 22-24 October 1987: Society of Economic Geologists Guidebook Series, v. 1, p. 124-160.
Creasey, S.C., 1950, Geology of the Humboldt region and the Iron King Mine, Big Bug mining district, Yavapai County, Arizona: U.S. Geological Survey Open-File Report [unnumbered].
Anderson, C.A., and Blacet, P.M., 1962, Geologic map of the NE 1/4 Mount Union [Poland Junction] quadrangle, Yavapai County, Arizona: U.S. Geological Survey Open-File Report [unnumbered], 1 sheet, scale 1:24,000.
U.S. Bureau of Reclamation, 1995, Winter cloud seeding potential on the Mogollon Rim, Final report, Volume III, Appendix B: Estimation of winter precipitation on the Mogollon Rim with a simple local-scale model, prepared for Arizona Department of Water Resources under IGA-0-AG-30-08290: Denver, U.S. Bureau of Reclamation Report R-95-11, 15 p. [available from the National Technical Information Service, Springfield, VA, 22161, as PB96-106968].