Virginia City, NV.
Timothy O'Sullivan, 1868. Gold Hill on Comstock Lode, Virginia City, Nev. (United States Geological Survey.)
Timothy O'Sullivan, 1868. Virginia City, Nev. Gold Hill Ravine. (United States Geological Survey.)
Timothy O'Sullivan, ca. 1868. Mine near Sugar Loaf Rock. (United States Geological Survey.)
Timothy O'Sullivan, 1868. Virginia City, Comstock Mines. (University of New Mexico.)
Timothy O'Sullivan, 1868. Quartz Mill near Virginia City. (United States Geological Survey.)
Timothy O'Sullivan, 1868. Quartz Mill near Virginia City (#43). (United States Geological Survey.)
Timothy O'Sullivan, 1867. Virginia City, Nev. (United States Geological Survey.)