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
Saint Jerome in the Desert (Pinturicchio) In 1931 it formed part of the original core of the Walters Art Museum in Baltimore, where it still hangs. It was restored in 1966. Saint Jerome in the Desert (Pinturicchio) Saint Jerome in the Desert is a 149.8 by 106 cm oil on panel painting by Pinturicchio, painted c.1475-1480 and showing Jerome. It is one of the earliest dated paintings attributed to the artist and was produced just after his contributions to the "Miracles of St Bernardino" series (1473). It is recorded as being in the Bartoccini family collection in Perugia before entering the Galleria Nazionale dell'Umbria, where it