http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Pt. I. The Goldfield gold district, Esmeralda and Nye counties, Nevada / by Roger P. Ashley -- The Tonopah precious-metal district, Esmeralda and Nye counties, Nevada / by Roger P. Ashley -- The Republic gold district, Ferry County, Washington / by Mortimer H. Staatz and Robert C. Pearson -- The Comstock Lode precious-metal district, Washoe and Storey counties, Nevada / by William C. Bagby and Roger P. Ashley.
Geology and resources of gold in the United States ; ch. H-I
U.S. Geological Survey bulletin ; 1857-H-I