1955 Map of Cisco Grove

About this map

Southern Pacific rail lines and high-altitude infrastructure define this mid-century view of the Sierra Nevada mountains near the Nevada and Placer County line. Modern technological markers like the Cisco Butte 8249 Airway Beacon and a Microwave Relay Sta stand alongside the historic Carlisle Mine, illustrating the transition from resource extraction to communication and transportation hubs. Water management is a central theme, evidenced by Lake Valley Reservoir, Spaulding Lake, and a Gaging Sta along the South Yuba River. Settlements and recreation sites, including Cisco Grove, Big Bend, and the Marin-Sierra Boy Scout Camp, dot the landscape between massive peaks like Signal Peak and Red Mountain. The map also captures several mountain meadows and flats such as Pelham Flat and Pierce Meadow, which hint at the region's earlier ranching history.