Report upon United States Geographical Surveys West of the One Hundredth Meridian : vol. 2. Astronomy and barometric hypsometry (1877): Reports upon the astronomical determinations at main stations in Nevada, Utah, Montana, Wyoming, Nebraska, Colorado, and New Mexico, occupied in the years 1872, 1873, and 1874 / Geographical Surveys West of the 100th Meridian (U.S.); in charge of First Lieut. Geo. M. Wheeler.
Report upon United States Geographical Surveys West of the One Hundredth Meridian :
