
Nevada Co. Narrow Gauge R.R. connects the industrial hubs of Grass Valley and Nevada City during this peak era of California hard-rock mining. The map documents a landscape defined by gold extraction, showing famous operations like the Empire Mine, Idaho Mine, and North Star Mine. Beyond the shafts, the processing economy is visible through the Sulphuret Works and the Washington Mill, indicating the complex chemical and mechanical infrastructure required to extract value from the Sierra foothills.
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This is the sole edition of this map. No revisions or reprints were ever made.
9 maps found