Bad water in the Amargosa River, 279 feet below sea level, in Death Valley, ca.1900-1950 

The painting "Moonlit Sea" by Hoover, depicting waves crashing into shallow water, [s.d.] 

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

Pima dam on Gila River, ca.1900 

View of North Fork from the Volcano West Point Road Bridge on the Mokelumne River, ca.1930 

Three men working at Placer mining operation near Lake Alamur, Deer Creek River, 1906 

View of Death Valley from Dantes Point, 5,200 feet above the valley, ca.1900-1950 

Merced River gold dredger in Merced Falls, ca.1930 

Three men in the Mexican Custom House, just below the first heading of the Colorado River, near Mexicali, ca.1910 

Water flume in the mountains between Camino and Placerville, ca.1930 

Man posing next to a sign in Death Valley, ca.1900-1950 

Monterey and Point Pinos from Hotel Del Monterey, ca.1900 

Interior view of Bagdad mine on the 90 feet level, California, ca.1900 

Colorado River Bridge in Yuma, Arizona, ca.1935 

Two men raising (or lowering) a flag in front of the Mexican Custom House, just below the first heading of the Colorado River, near Mexicali, ca.1910 

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

View of the distant Colorado River from Duttons Point, Grand Canyon, ca.1900-1930 

Dam at Hamlin intake on the Colorado River, taken from the railroad tracks, ca.1910 

Dante's view of Death Valley showing Telescope Peak with snow, ca.1900-1950 

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