1878. Progress Map Of The U.S. Geographical Surveys West Of The 100th Meridian.
1879. Progress Map Of The U.S. Geographical Surveys West Of The 100th Meridian. To accompany the Annual report of Captain George M. Wheeler Corps Of Engineers, U.S. Army in Charge. West Of The One Hundredth Meridian. Seasons of 1869, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878 & 1879. 1st. Lieut. Geo. M. Wheeler. Corps Of Engineers, in charge. United States Geographical Surveys.
David RumseyWheeler, G.M.
1879
1876
U.S.
1:6 000 000