1878. Progress Map Of The U.S. Geographical Surveys West Of The 100th Meridian.

1878, Progress Map Of The U.S. Geographical Surveys West Of The 100th Meridian. To accompany the special report of 1st Lieut. George M. Wheeler Corps Of Engineers, U.S. Army. To Brig. Gen. A.A. Humphreys, Chief of Engineers, U.S. Army. in response to resolution of House of Representatives, March 8th 1878. West Of The One Hundredth Meridian. Seasons of 1869, 1871, 1872, 1873, 1874, 1875, 1876 & 1877. 1st. Lieut. Geo. M. Wheeler. Corps Of Engineers, in charge. U.S. Geographical Surveys.

Wheeler, G.M.

1878

1876

U.S.

1:6 000 000

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