Hand Operated Fire Pump

1938

Related works

United States Geological Survey, 1940

United States Geological Survey, 1937

United States Geological Survey, 1936

United States Geological Survey

United States Geological Survey, 1940

United States Geological Survey, 1939

United States Geological Survey, 1939

United States Geological Survey, 1936

United States Geological Survey, 1936

United States Geological Survey, 1939

United States Geological Survey, 1936

United States Geological Survey, 1939