TALMAGE S.B. AND WOOTTON T.P. THE NON-METALLIC MINERALRESOURCES OF NEW MEXICO AND THEIR ECONOMIC FEATURESNMBM BULL. 12 1937 P 54DAVIS C.W. AND VACHER H.C. BENTONITE- ITS PROPERTIES,MINING, PREPERATION AND UTILIZATION USBM TECH. PAPER 4381928 P 7NMBM BULL 87 1965 P 315USGS MINERAL RESOURCE MAP MR 45 HAIGLER AND SUTHERLAND 1965NMBM NON METAL RESOURCE MAP 1965