The romance of the Colorado River : the story of its discovery in 1540, with an account of the later explorations, and with special reference to the voyages of Powell through the line of the great canyons (1903)
Dellenbaugh, Frederick Samuel, 1853-1935 · New York ; London : G.P. Putnam's Sons · leaf 233
-v Canyon of San Juan River Looking West at Honiket Trail, Utah. 2000 feet deep. Photograph by Charles Goodman.
Colorado River (Colo.-Mexico) · Grand Canyon
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.