Scarborough, R.B., 1981, Radioactive occurrences and uranium production in Arizona: U.S. Department of
Energy Report GJBX-143(81), 297 p., 21 plates [plates available for inspection at ADMMR, scanned versions will be posted later].
GJBX 143(81) part 1
Introduction, Uranium occurrences in Arizona, Thorium in Arizona