1928 Map of Azusa

About this map

Sierra Madre peaks tower over the developing San Gabriel Valley in this mid-1920s survey, illustrating a landscape defined by its transition from steep canyons to alluvial plains. The residential and commercial blocks of Monrovia and Azusa are clearly established, while the citrus-growing heart of Duarte remains less densely settled. The local economy and transport network are dominated by three major rail lines: the Southern Pacific, the Pacific Electric, and the Atchison Topeka and Santa Fe, which cut through the gravel-rich flats near the San Gabriel River.