Desert bighorn sheep establish two desert areas in southwestern Arizona to help preserve the desert bighorn sheep: Cabeza Prieta National Wildlife Refuge and the Kofa National Wildlife Refuge. In 1941, the San Andres National Wildlife Refuge in New Mexico was added. Desert bighorn sheep populations have trended upward since the 1960s when their population was estimated at 6,700-8,100. The upward trend was caused by conservation measures, including habitat preservation. In 1980, desert bighorn sheep populations were estimated at 8,415-9,040. A state-by-state survey was conducted a few years later and estimated the overall US desert bighorn sheep population at 15,980. The 1993 estimate of
Desert Inn time of its construction and commanded views of the mountains and desert all around, as well as overlooked the "Dancing Waters" feature. The "Sky Room" restaurant was headed by a chef formerly of the Ritz Paris. The original performance venue at the Desert Inn was the 450 seat Painted Desert Room, later the Crystal Room, which opened in 1950 with 450 seats. Charles Cobelle created the handpainted murals, and a "band car" was used to move the orchestra within the showroom. Next door was a restaurant, the Cactus Room. The Kachina Doll Ranch was a supervised play area for guests'