Illustrated with b/w photos & maps. Reno: Nevada State Bureau of Mines & the Mackay School of Mines, (1956). 8vo. Wraps. xiv, 206 p. + 23 folding maps in pocket at rear. University of Nevada Bulletin, Vol. XXXVIII, No. 5. 
Illustrated with maps. [Washington]: Bureau of Mines, U.S. Department of the Interior, 1950. 8 1/2 x 11 in. Stapled mimeographed sheets with printed cover. Bureau of Mines Report of Investigations 4697.