By Bob Baker
As soldiers, miners and others flooded the newly discovered gold fields in the central Arizona Territory, the food supply, particularly of meat, became stressed as local wildlife disappeared. Beef in particular was very desirable and expensive. In December 1863, the U.S. Army brought 500 beef cattle and 700 working cattle with them when they established Fort Whipple at Del Rio Springs, sparking the cattle ranching industry in Northern Arizona.
Early ranchers in Lonesome Valley (which now encompasses Chino Valley, Prescott Valley and Dewey-Humboldt) grazed their cattle throughout the valley on open range. The cattle roamed freely, intermixing without regard to ownership. The roundup (or rodeo in Spanish) enabled the cattle ranchers to systematically gather and segregate their cattle from those of other ranchers using the same open range.


