Sand and gravel

Richmond, D.L., 1973, General soil map, Graham County, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 74 p., 1 sheet, scale 1:500,000.

Richmond, D.L., 1973, General soil map, Greenlee County, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 49 p., 1 sheet, scale 1:500,000.

Richmond, D.L., 1971, General soil map, Cochise County, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 52 p., 1 sheet, scale 1:500,000.

Richardson, M.L., Clemmons, S.D., and Walker, J.C., 1979, Soil survey of Santa Cruz and parts of Cochise and Pima Counties, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 105 p., 124 sheets, scale 1:20,000.

Richardson, M.L., and Miller, M.L., 1974, Report and interpretations for the general soil map, Pima County, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 49 p., 1 sheet, scale 1:500,000.

Richardson, M.L., and Miller, M.L., 1972, Report and interpretations for the general soil map, Navajo County, Arizona, revised December 1972: U.S. Department of Agriculture, Soil Conservation Service, 43 p., 1 sheet, scale 1:500,000.

Richardson, M.L., 1971, General soil map, Santa Cruz County, Arizona, revised July 1971: U.S. Department of Agriculture, Soil Conservation Service, 39 p., 1 sheet, scale 1:250,000 [additional pages added April 1972].

Richardson, M.L., 1972, General soil map, lower Pantano Wash area, Pima County, Arizona - A special report with selected engineering interpretations: U.S. Department of Agriculture, Soil Conservation Service, 28 p., 1 sheet, scale 1:31,380.

Pewe, T.L., Wellendorf, C.S., and Bales, J.T., 1986, Environmental geology of the Tempe quadrangle, Maricopa County, Arizona: Arizona Bureau of Geology and Mineral Technology Geologic Investigation Folio Series no. 2, 8 sheets, scales 1:8,700 and 1:24,000.

Olson, G.G., and Long, J.T., Jr. [Arizona Research Consultants, Inc.], 1957, Arizona's natural resources - A review prepared for the Arizona Development Board: Phoenix, Arizona Development Board, 147 p.