Two men pulling themselves across the Alamo River on a cable strung high above, ca.1910 

Wood Howe truss bridge across the Alamo River below Holtville, Imperial County, California, ca.1910 

Intake pier in the Salton Sea, eight miles below Yuma, 1906 

Pelicans at the Salton Sea, California, ca.1910 

View of Salton Sea, California, ca.1910. 

Pelicans at the Salton Sea, California, ca.1910 

Pelicans at the Salton Sea, California, ca.1910 

Pelicans at the Salton Sea, California, ca.1910 

Salton Sea pelicans, California, ca.1910 

Flat boat moored in Needles Canyon, on the Colorado River, 1900-1950 

Santa Fe Bridge at Needles, over the Colorado River to Arizona, 1900-1950 

Professor William Judson painting a picture on the bank of the Colorado River during a trip with George Wharton James, ca.1910 

Construction of the Imperial Canal head gate apron on the Colorado River, Sharps, ca.1903 

Ancient shore and sea line of the Salton Sea in the desert, ca.1930 

Canal congested with water from the Colorado River after five unsuccessful attempts at channeling the river, ca.1903 

Man standing on shore next to a small ferry boat moored along the Colorado River in one of the Mojave canyons, California, 1900-1950 

Sea line of the Salton Sea in the desert, ca.1930 

Mesquite forest near the Colorado River, California, ca.1910-1920 

Long curving jetty formed from piles on the Colorado River, New Heading, ca.1900-1950 

Canal congested with sediment from the Colorado River after five unsuccessful attempts at channeling the river, ca.1903