Outline of the Geology of the Comstock Lode District, Nevada
Outline of the Geology of the Comstock Lode District, Nevada by Calkins, F. C. (1945). Full text and reference in the Mountain Man Mining Library.
Public-domain full text preserved in the Mountain Man Mining Library. Original source: pubs.usgs.gov.
Outline of the Geology of the Comstock Lode District, Nevada Author: Calkins, F. C. Year: 1945 Category: Report Tags: usgs, Comstock Lode Nevada Source: ://pubs.usgs.gov/of/1945/0029/plate-1.pdf