USGS Geologic Map: Brooks Spring Quadrangle, Nevada, Tungsten and Bismuth 
Description: Geochemical, Aeromagnetic and Generalized Geologic Maps Showing Distribution and Abundance of Tungsten and Bismuth, Brooks Spring Quadrangle, Humboldt County, Nevada
Publisher: U.S. Geological Survey 
Map: MF-567
Print Date: 1974
Scale: 1:24,000
Format: Folded
Media: One-sided paper map.