1956 Map of Telegraph Peak

About this map

Wrightwood serves as the primary hub in this mid-century survey of the high mountain divide between the Angeles National Forest and the San Bernardino National Forest. The landscape is dominated by extreme verticality, defined by the towering summit of Telegraph Peak and the high-altitude Mt Baldy Notch. The map details a transition from the developing residential layout in Swarthout Valley to the more primitive reaches of the Cucamonga Wild Area, where only a few remote structures like Manker Flat exist. Historical points of interest appear along the eastern edge, including the Pioneer Historic Marker near Cajon Canyon, signaling the importance of these passes for early transcontinental movement. Scattered mining prospects and ranch outposts such as Prudhon Ranch, Nielson Ranch, and Sharpless Ranch illustrate the sparse but persistent human presence in the drainage basins of Lytle Creek and its various forks.