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Farnham, L.L., and Havens, R., 1957, Pikes Peak iron deposits, Maricopa County, Ariz.: U.S. Bureau of Mines Report of Investigations R.I. 5319, 31 p.

Camp, P.D., 1986, Soil survey of Aguila-Carefree area, parts of Maricopa and Pinal Counties, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 306 p., 28 sheets, scales 1:24,000, 1:506,880 [26 double-sided loose sheets].

U.S. Army Corps of Engineers, Los Angeles District, 1979, Flood damage report 28 February-6 March 1978 on the storm and floods in Maricopa County, Arizona: Los Angeles, U.S. Army Corps of Engineers, 75 p.

Thiele, H.J., 1965, Present and future water use and its effect on planning in Maricopa County, Arizona: Phoenix, Ariz., Maricopa County Planning and Zoning Commission-Department, 60 p. [available for inspection at Tucson, University of Arizona Library, Special Collections].

Littin, G.R., 1981, Maps showing ground-water conditions in the Agua Fria area, Yavapai and Maricopa Counties, Arizona - 1979: U.S. Geological Survey Water-Resources Investigations Open-File Report 81-0804, 2 sheets, scale 1:125,000.