This was taken by C. Sanders, who took photos up and down the Atlantic Pacific line. Verde Canyon, near Sedona and Cottonwood, was not on the AP line, but was very close to one of its stops. This looks very much like it was taken in Verde Canyon, but I cannot be sure. The collection it came from, Included verified locations on or near the A&P line from Needles California & Peach Springs, to the San Francisco Mountains.