GEOGRAPHICAL EXPLORATIONS &_ SURVEYS WEST or the 100™ MERIDIAN 
PARTS or E.CALIFORNIA, S.E.NEVADA,N.W. ARIZONA and S.W.UTAH, ATLAS SHEET NV66 
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EXPEDITION OF 1869 1872 & 1873 Under the Command of 
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1st. Lieut. Geo.M .Wheeler, Corps of Engineers 
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BY ORDER OF THE HONORABLE Wl.XT. BELKNAP, SECRETARY OF WAR. 
UNDER THE DIRECTION OF BRIG. GEN. A. A. HUMPHREYS , CHIEF OF ENGINEERS, II S. ARMY 
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