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

Cotton plant from Imperial, California, ca.1925 

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

Specimen of Kaffir corn (White Egyptian), ca.1910-1925 

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

Large cluster of dates from Imperial Valley, ca.1900-1920 

Close-up of a specimen of a Chrysanthemum (flower), ca.1920 

Close-up of a specimen of flax, showing strands of fiber entwined to form a rope (or string?), [s.d.]. 

Wild hemp growing in Imperial Valley 

Close-up of a specimen of a Lady Washington Geranium (Pelagonium), ca.1920 

Hotel Imperial, Imperial County, ca.1910 

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

Close-up of a specimen of a Hydrangea in bloom, ca.1920 

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

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

Imperial County whirlwind on desert, ca.1910 

Specimen of an Amaryllis flower, ca.1920 

Mesquite bean plant specimen, ca.1900-1910 

Trees in Imperial Valley after irrigation 

Close-up of a shiny red apple