Hotel Imperial, Imperial County, ca.1910 

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

Screw poll mesquite growing in Colorado Desert, ca.1910 

Russian thistle (Salsola Kali), or Ink weed, growing in the Colorado Desert, Imperial Valley, California, ca.1910 

Mesquite tree in Imperial Valley after irrigation, ca.1910-1920 

Two horse-drawn wagons on the road between the Painted Desert and the San Francisco Mountains, Arizona, ca.1900 

Primitive desert Indian meeting house, Imperial Valley, California, ca.1910 

Specimen of a date palm after irrigation in Imperial Valley, ca.1910-1920 

Pelicans at the Salton Sea, California, ca.1910 

View of Main Street in Calexico, Imperial Valley, ca.1910 

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

A desert dwelling in Imperial Valley, California, ca.1900 

Miner standing next to a pack mule in the desert looking toward Superstition Mountain from the south, ca.1910 

Cotton close-up view, Imperial Valley, ca.1910-1925 

Two butterflies on alfalfa specimen in Imperial Valley, ca.1910-1925 

General view of the Painted Desert from Tohatchi, New Mexico, ca.1900 

Mesquite covered with mistletoe growing in the Colorado Desert, ca.1915 

Wild hemp close-up view, Imperial Valley, California, ca.1910-1925 

Farmer mowing alfalfa with a horse-drawn mower in an Imperial Valley alfalfa field 

Mud springs and great sink on Mojave Desert near Rosamond, 1904