Subject: Second Powell expedition: Party in boats and ready to depart from Green River, Wyoming. Left to right, in the Canonita: E.O. Beaman, Andrew Hattan, and Walter Clement Powell; in the Emma Dean: Stephen Vandiver Jones, John K. Hillers, John Wesley Powell, and Fredrick S. Dellenbaugh; in the Nellie Powell: Almon Harris Thompson, John F. Steward, Frances Marion Bishop, and Frank Richardson.
Date: May 22, 1871
Collection: Grand Canyon National Park (No. 17234).