1951 Map of Old Iron Mountain

About this map

The North Fork Cosumnes River and its various tributaries define the steep, timbered ridges of the Eldorado National Forest in the mid-20th century. This area shows a landscape shaped by logging and mineral extraction, evidenced by various historical sites like the Plum Creek Mill Site, Girard Mill Site, and the Tuman Mill Site. These mill locations, often positioned near reliable water sources like Plum Creek, suggest the economic drivers of the region's early development.