1955 Map of Telegraph Peak

About this map

Wrightwood sits at the edge of the Swarthout Valley, serving as a gateway to the high-elevation terrain of the San Gabriel Mountains. This mid-century survey reveals a landscape shaped by both geologic forces and mountain recreation, dominated by the prominent San Andreas Rift Zone slicing through Lone Pine Canyon. The map details a network of early mountain infrastructure, including the Angeles Crest Highway and several high-altitude landmarks like Telegraph Peak and Thunder Mtn. Scattered across the foothills and canyons are several private holdings such as Nuss Ranch, Prudhon Ranch, and Sharpless Ranch, which represent the early residential and agricultural footprint in this rugged area. Recreational development is evident near Baldy Notch with the presence of a Ski Lift and Miners Bowl, while the Pioneer Historic Marker in Cajon Canyon notes the area's significance for early travelers.