APPROXIMATELY LOCATED IN OR AROUND THE BULLION MINING DISTRICT; PROPERTY REPORT; CORRESPONDENCE; GEOLOGY; GEOLOGIC MAPS; CROSS SECTIONS; SITE NAME: VISTA BLOCK, E.L. DOHENY MINING, U.S. MINING EXPLORATION CO., INC., VISTA CLAIMS; COMMODITY: SILVER, COPPER, LEAD, ZINC; AUTHOR: EVANS, D.L.