1967 Map of Mt. Baldy

About this map

Mt Baldy and the high peaks of the Angeles National Forest dominate this landscape, illustrating the sharp transition from the residential grid of Upland and Claremont to the steep wilderness of the San Gabriel Mountains. The map reveals a complex water management infrastructure essential to the region's development, centered on the San Antonio Dam and its expansive Percolation Basin and percolation basins. Local cultural and educational history is anchored by the Padua Hills Theater and schools like the Girls Collegiate Sch. High-altitude settlements and camps such as Barrett and Thompson Ranch are connected by the winding Mt Baldy Road and Glendora Ridge Road. The inclusion of the San Dimas Experimental Forest and Cucamonga Wilderness highlights the era's focus on forest management and watershed protection as suburban growth pressed against the mountain foothills.