1903 Map of Cucamonga

About this map

The San Gabriel Mountains dominate the northern landscape of this survey, where steep canyons like San Antonio Canyon and Icehouse Canyon drop sharply toward the emerging citrus and vineyard belts of the valley below. At the turn of the century, the region was defined by a sophisticated web of early rail infrastructure, including the Atchison Topeka and Santa Fe R. R. and the Chino Valley Narrow Gauge R. R. serving agricultural hubs like Ontario and Chino. The transition from the high peaks of Ontario Peak and Cucamonga Peak to the geometric grid of the San Bernardino Base Line illustrates the rapid agricultural organization of the Santa Ana Del Chino area. Small mountain outposts such as Toll House and Bear Flat contrast with the growing town sites of Claremont and Etiwanda, reflecting the era's dual identity of mountain wilderness and organized ranching.