Economite Bowl or Cake Mold

1937

Related works

United States Geological Survey, 1936

United States Geological Survey, 1936

United States Geological Survey, 1940

United States Geological Survey, 1935

United States Geological Survey, 1937

United States Geological Survey, 1939

United States Geological Survey, 1936

United States Geological Survey

United States Geological Survey, 1935

United States Geological Survey, 1935

United States Geological Survey, 1935

United States Geological Survey, 1936