U.S. Geographical surveys west of the 100th meridian. Vol. I Geographical report. Plate No. XVII. Black Canyon, Colorado River, from Camp 8, looking above. 1871
MLA
U.S. Geographical Surveys West of the 100th Meridian. Vol. I Geographical Report. Plate No. XVII. Black Canyon, Colorado River, from Camp 8, Looking above. 1871. 1873. https://collections.library.yale.edu/catalog/2015862.
APA, 6th edition
U.S. Geographical surveys west of the 100th meridian. Vol. I Geographical report. Plate No. XVII. Black Canyon, Colorado River, from Camp 8, looking above. 1871. (1873). [Lithographs, Planographic prints]. https://collections.library.yale.edu/catalog/2015862.
