Freaks of erosion. Title Dellenbaugh used in the The Romance of the Colorado River. Old nos. 306, - NARA - 517828
Autor: E. O. (Elias Olcott) Beaman, 1837-1876, Photographer (NARA record: 8464436) James Fennemore, 1849-1941, Photographer (NARA record: 8464442) John K. Hillers, 1843-1925, Photographer (NARA record: 3028457)Link do atrybucji: commons.wikimedia.org