Drawing of a Mexican American digging a water ditch, "zanja", near what may be a mission, ca.1840 

Men standing next to a large alfalfa root in Imperial Valley, ca.1910 

Barley crops being watered by artesian well irrigation 

Two men wearing sombreros loading a burro in front of a building, Mexico, ca.1900 

Two men riding burros on a country road in Mexico, ca.1905 

Lyon's well in the desert where water was sold, Colorado Desert, ca.1890-1900 

Close-up of one of 50 flowing water wells on Chino Ranch, ca.1903-1905 

Artesian well at an old adobe ranch house, South Pasadena, ca.1884-1886 

Five people stopping for water at Granite Wells, Death Valley, ca.1900-1950 

Close-up of a zanja (irrigation ditch) in Sixth Street Park (later Pershing Square), Los Angeles, ca.1876-1880 

Portrait of a prospector with his burros during the days of the gold rush, ca.1900 

Document detailing the duties of Deputy Zanjeros, who attended to the Los Angeles water supply, June 13, 1879 

A burro train of water carriers, Bisbee, Arizona, ca.1900-1930 

Burros carrying wood in Mexico, ca.1900 

General Bouton's new well flows 12 inches over a 12-inch diameter pipe, ca.1900 

Group of men and a burro in front of the Campo stage station and store, ca.1905 

Unidentified view of a bridge and what may be flood damage, ca.1930 

Men examining bad water in Amargosa River below Dante's Point, 279 feet below sea level, ca.1910 

Water intake irrigation system at Mission San Fernando, 1924 

Irrigation ditches in a citrus grove, ca.1900