Whirlwinds, Mojave Desert, California no. 2

This is a rare etching by American artist of the Southwest, George Elbert Burr.  The title is: Whirlwinds, Mojave Desert, California no. 2.  It was created and printed circa 1930.  This pencil signed and titled etching measures 8X10 inches.  This appears in the Burr catalog as image number 281.