Timothy H. O'Sullivan, 1871-1874 (survey), 1872 (expedition), 11. Mouth of the Paria, Colorado River, walls 2,100 feet in height., [Wheeler Survey, Explorations and Surveys West of the 100th Meridian], Stereocard, detail, Etherton Gallery, LL/24729
Timothy H. O'Sullivan 1871-1874 (survey), 1872 (expedition) 11. Mouth of the Paria, Colorado River, walls 2,100 feet in height. [Wheeler Survey, Explorations and Surveys West of the 100th Meridian]
