1948 Map of Mockingbird Gap

About this map

The Oscura Mountains dominate the center of this landscape, serving as a backdrop for the military expansion of the mid-twentieth century. Based on 1948 field checks, the map captures a transition as traditional ranching outposts like A D Helm Ranch and Withers Ranch sit alongside the White Sands Proving Ground and the Alamogordo Bombing Range. The strategic shift is evident in markers such as the Demolition Target and the Air Strip (Abandoned), while the McDonald Ranch (Abandoned) signals the displacement of earlier homesteads. Water remains the critical factor for survival in this arid terrain, documented through numerous family-named sources like Kidd & Duffy Spring and Palomas Moonshine Spring. At the southern edge of the mountains, Mockingbird Gap provides a natural pass through the high ground, while the small settlement of Estes City is positioned near the eastern foothills.