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
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