Report of explorations in 1873 of the Colorado of the West and its tributaries [microform] /
Powell, John Wesley,1834-1902.
Smithsonian Institution.
Washington [D.C.] : G.P.O.,
1874.
Caption title: Survey of the Colorado of the West.
Sabin 64754.
Sabin Unit 147.
GEO-125.
Microfiche.