1951 Map of Caldor

About this map

Caldor stands as a central industrial and administrative node within the Eldorado National Forest in this early 1950s survey. The map details a landscape defined by timber extraction and mineral exploration, notably marked by the presence of a logging road network and the Caldor Ranger Sta. Mining activity is dispersed across the ridges, including the Spread Eagle Mine and Arbor Mine near the settlement, while the Red Gold Mine is situated further west. The topography is characterized by major drainages like the North Fork Cosumnes River and Middle Fork Cosumnes River, which carve through prominent landforms such as Plummer Ridge and Big Mountain. This document captures the mid-century infrastructure of the Sierra Nevada foothills, including fire suppression sites like the Dew Drop Fire Control Station and the Fort Grizzly Site along the southern border between El Dorado and Amador counties.