IT.S.GEOGRAPHICAL SURVEYS WEST of the ONE-HUNDREDTH MERIDIAN. 
ATLAS SHEET NUMBER 58. 
PARTS OF E.CALIFORNIA, S.E.NEVADA,N.W. ARIZONA & S.W.UTAH 
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UNDER THE, DIRECTION OF BRIG.GEN.A.A.HUMPHREYS,CHIEF OF ENGINEERS,!! S,ARMY 
