1966 Map of Guasti

About this map

Rancho Cucamonga and the surrounding agricultural and industrial corridor of San Bernardino County are captured during a period of rapid development. The map prominently features the Ontario Motor Speedway and the massive Steel Plant in Fontana, illustrating the area's transition toward large-scale infrastructure. Agricultural roots remain visible through the Cucamonga Winery and the sprawling vineyards that once defined the landscape near Guasti. Transportation networks dominate the terrain, from the legacy of the Pacific Electric and Southern Pacific railroads to the expanding San Bernardino Freeway. In the northern section, the residential growth of Alta Loma and Etiwanda spreads toward the base of the mountains, while the Ontario International Airport occupies a significant portion of the valley floor, highlighting the region's importance as a logistics and transit hub.