Langenheim, V.E., Duval, J.S., Wirt, Laurie, and Dewitt, Ed, 2000, Preliminary report on geophysics of the Verde River headwaters region, Arizona: U.S. Geological Survey Open-File Report 00-0403, 28 p.
Billingsley, G.H., Wenrich, K.J., Huntoon, P.W., and Young, R.A., 1999, Breccia-pipe and geologic map of the southwestern part of the Hualapai Indian Reservation and vicinity, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-2554, 50 p., 2 sheets, scale 1:48,000.
Harris, R.C., Leighty, R.S., Scarborough, Robert, and Spencer, J.E., 1998, Uranium levels and radon potential in selected areas north of Phoenix, in the St. Johns area, and north of Tuba City, Arizona: Arizona Geological Survey Open-File Report 98-10, 13 p.
Harris, R.C., 1998, Bibliography of geophysical studies and data in the San Carlos - Safford - Duncan Nonpoint-Source Management Zone, Arizona: Arizona Geological Survey Open-File Report 98-07, 9 p.
Harris, R.C., 1997, Uranium distribution in the Cave Creek - Carefree area, central Arizona, and implications for indoor radon: Arizona Geological Survey Open-File Report 97-06, 11 p., 1 sheet, scale 1:100,000.
Kalin, R.M., 1994, The hydrogeochemical evolution of the groundwater of the Tucson Basin with application to 3-dimensional groundwater flow modelling: Tucson, University of Arizona, Ph.D. dissertation, 510 p.
Harris, R.C., 1996, Distribution of uranium in rocks and radon levels in water in the San Carlos - Safford - Duncan Nonpoint-Source Management Zone: Arizona Geological Survey Open-File Report 96-28, 10 p., 3 sheets, scales 1:24,000, 1:250,000, and 1:500,000.
Spencer, J.E., and Harris, R.C., 1996, Reconnaissance survey of upper Neogene strata in the Bouse Formation, Hualapai Limestone, and lower Gila River trough, western Arizona and directly adjacent southeastern California: Arizona Geological Survey Open-File Report 96-17, 21 p.
Harris, R.C., 1996, Uranium distribution in sediments of the lower San Pedro Valley, southeast Arizona, and implications for indoor radon: Arizona Geological Survey Open-File Report 96-02, 10 p., 1 sheet, scale 1:100,000.
Damon, P.E., Haynes, C.V., and Cole, G.A., 1964, Carbon 14 content of aquatic plants, Montezuma Well, Arizona [abs.]: Eos, Transactions, American Geophysical Union, v. 45, p. 117.