WILLIAM HENRY JACKSON (1843-1942) Hanging Rock, Clear Creek Canyon, Colorado (Union Pacific Railway). Mammoth-plate albumen print, the image measuring 20 1/2x16 3/4 inches (52.1x42.5 cm.), the mount 28x22 inches (71.1x55.9 cm.), with Jackson's credit, the title, and numeric notation 1171 in the negative. 1870s
Provenance: Alan Klotz Gallery, New York
Reproduced: Clarence S. Jackson, William Henry Jackson Picture Maker of the Old West (Charles Scribner's Sons), p. 292 (variant)
