1953 Map of Diablo

About this map

Mt Diablo State Park dominates the northern terrain of this quadrangle, revealing a complex network of canyons and ridges such as Pine Ridge and Fossil Ridge. The map illustrates a transitional period in the San Ramon Valley, where traditional ranching landmarks like Black Hawk Ranch meet the emerging suburban footprints of Danville and San Ramon. The transportation infrastructure is anchored by the San Ramon Branch of the Southern Pacific railroad, including the San Ramon Siding, which historically served the valley's agricultural needs before the expansion of local road networks. Educational and social hubs are clearly marked, from the Green Valley School and Athenian Sch to the recreational facilities of the Golf Course and numerous camps like Toyon Camp and Buckeye Camp tucked into the foothills of the mountain range.