Columbia subject headings:
Comstock Lode (Nev.)
Virginia City (Nev.)--History.
Harvard subject headings:
Comstock Lode (Nev.)
Mineral industries--Nevada--History.
Mines and mineral resources--Nevada--History.
Virginia City (Nev.)--History.
Princeton subject headings:
Comstock Lode (Nev.)
Virginia City (Nev.)--History.