Title: Report of Lieut. Col. James H. Simpson, Corps of Engineers, U.S.A., on the Union Pacific railroad and branches, Central Pacific railroad of California, Northern Pacific railroad, wagon roads in the territories of Idaho, Montana, Dakota, and Nebraska, and the Washington aqueduct
Subjects: Pacific railroads, Roads, Water-supply, Union Pacific Railroad Company
Places: Northwestern States, Washington Aqueduct (Md. and Washington, D.C.), Washington (D.C.), United States, Washington Aqueduct