The exploration of the Colorado River in 1869 and 1871-1872 biographical sketches and original documents of the first Powell expedition of 1869 and the second Powell expedition of 1871-1872 - Darrah, William Culp 1909-1989; Chamberlin, Ralph V. 1879-1967; Kelly, Charles 1889-1971 (The University of Utah Press, 2009)
First published in the Utah historical quarterly, v. 15, 1947.
Includes bibliographical references and index