1939
United States Geological Survey, 1936
United States Geological Survey, 1619
United States Geological Survey, 1935
United States Geological Survey, 1941
United States Geological Survey, 1937
United States Geological Survey, 1940
United States Geological Survey
![Untitled [boy and girl with flag and gun]](https://1.api.artsmia.org/59755.jpg)
