Tecopa Railroad (1910-1932) #1 2-6-2T BLW 1909 #34089. Noonday Mine, near Tecopa, Calif. Stamp on back of photo: "Mallory Hope Ferrell P. O. Box 2837 Peachtree City, GA 30269."
Provided quote by Dave Coons: "Three locomotives at dam site; Hoover Dam construction. Middle locomotive ex-LV&T locomotive. Used by 6 Companies, judging by square tender."