Progress-report upon Geographical and geological explorations and surveys west of the one hundredth meridian, in 1872, under the direction of Brig. Gen. A.A. Humphreys, chief of engineers, United States army
- publisher: Washington, Govt. print. off.
- creator: Geographical Surveys West of the 100th Meridian (U.S.) Wheeler, George M. (George Montague), 1842-1905
- contributor: Wheeler, George M. (George Montague), 1842-1905.
- Keyword: United States Surveys.
- years: 1874.
- pages: 56 p.
- class: QE74
- notes: At head of title: Engineer department, United States army.
- download: pdf file
