1954 Map of San Dimas

About this map

The San Jose Hills and Puente Hills define this mid-century landscape of Eastern Los Angeles County, where citrus groves were rapidly giving way to suburban expansion. Major industrial and institutional footprints are evident, from the sprawling Los Angeles County Fairground and the Naval Ordnance Plant in Pomona to the Pacific State Hospital further south. Educational expansion is a central theme, with the California State Polytechnic College (Kellogg) and California State Polytechnic College (Voorhis) campuses appearing alongside local institutions like Bonita Union High Sch and Mt San Antonio Jr College. A complex web of transportation, including the Atchison Topeka and Santa Fe and Pacific Electric railroads, bisects the towns of San Dimas and La Verne, while the emerging San Bernardino Freeway signals the region's shift toward high-speed automobile transit.