ROBERTS R.J., ETAL (1967) GEOLOGY & MINERAL RESOURCES OF EUREKA CO. NEV., NEW BUREAU OF MINES BULL 64USB OF M (ELY) MILS NO 108, REF. NO 3201100145, MINERAL PROPERTY FILE 37.580NOLAN T.B. (1962) THE EUREKA MINING DISTRICT NEV., USGS PP. 406NOLAN, T.B. (1962)