1. Citadel Rock, Green River Valley Author(s): Russell, Andrew J., photographer Publication: New York : Julius Bien, 1870 Subject(s): GeologyRailroadsWyomingUtahColoradoUnion Pacific Railroad Company.
2. Granite rock, Buford Station, Laramie Mountains Author(s): Russell, Andrew J., photographer Publication: New York : Julius Bien, 1870 Subject(s): Silicon DioxideGeologyWyomingColorado
3. Skull Rock, (granite), Sherman Station, Laramie Mountains Author(s): Russell, Andrew J., photographer Publication: New York : Julius Bien, 1870 Subject(s): Silicon DioxideGeologyWyomingColorado
