Bishop Hill: Copper Skillet

1938

Related works

United States Geological Survey, 1937

United States Geological Survey, 1935

United States Geological Survey, 1935

United States Geological Survey, 1939

United States Geological Survey, 1856

United States Geological Survey, 1939

United States Geological Survey

United States Geological Survey, 1935

United States Geological Survey, 1935

United States Geological Survey, 1938

United States Geological Survey, 1936

United States Geological Survey, 1938