Columbia subject headings:
Twain, Mark, 1835-1910--Homes and haunts--Nevada--Virginia City.
Twain, Mark, 1835-1910.
Virginia City (Nev.)
Harvard subject headings:
Twain, Mark, 1835-1910
Virginia City (Nev.)
Princeton subject headings:
Twain, Mark, 1835-1910.
Virginia City (Nev.)