1958 Map of Del Sur

About this map

Portal Ridge dominates this high-desert landscape, where the dramatic San Andreas Rift Zone and Elizabeth Lake-Pine Canyon create a distinct geological divide through Los Angeles County. In the late 1950s, this region was characterized by scattered ranches and essential agricultural research, notably the Univ of Calif Agricultural Field Station. The settlement of Del Sur serves as a small hub, anchored by the Del Sur School, while surrounding areas like Antelope Acres show the early footprints of rural expansion. Water management and family-owned properties are central to the area's development, evidenced by names like Eric Munz Ranch, Foothill Ranch, and the Leona Valley Ranch. The terrain varies from the level basin floors where a Landing Strip and Antelope Substation are located, to the elevations of Johnson Summit within the northern edge of the Angeles National Forest.