1955 Map of Cisco Grove

About this map

Cisco Grove and the high Sierra crossing of the Southern Pacific railroad dominate this mid-century survey of the Tahoe National Forest. The map documents the intricate logistics of the era's transcontinental infrastructure, from the S P Lookout (Aban'd) on Red Mountain to the network of tunnels and sidings at Yuba Pass and Cisco. The landscape is a mix of industrial utility and recreational emergence, featuring the Marin-Sierra Boy Scout Camp and 4H Club Camp alongside the massive Lake Valley Reservoir. Evidence of earlier resource extraction persists at the Carlisle Mine near Old Man Mtn, while the rise of aviation and modern communications is marked by the Airway Beacon and Microwave Relay Sta near Cisco Butte. The boundary between Nevada Co and Placer Co cuts through these granite peaks, following the watershed between the South Yuba River and the North Fork American River.