1956 Map of Baldy Mesa

About this map

The high desert landscape of Baldy Mesa is defined here by its ranching history and large-scale water and rail infrastructure. Numerous established family holdings, including the Yucca Forest Ranch, Patterson Ranch, and White Ranch, suggest a period where extensive land use was primarily agricultural before later suburban expansion. The infrastructure is anchored by the California Aqueduct and the Southern Pacific railroad line, both of which traverse the arid terrain near the Oro Grande Wash. In the southern portion of the map, the landscape shifts toward the protected lands of the San Bernardino National Forest, where the topography becomes more defined along Manzanita Wash. Updated in the 1980s from mid-century surveys, this map documents the transition of this San Bernardino County region as roads like Phelan Road began to link isolated desert outposts.