The Air Service During World War I, pp 19-24. The Air Service Between the Wars, pp 25-30. Book call no. The Story of the United States Strategic Bombing Survey . New York, Garland Pub, 1976.
Book call no.
The Great Attack on St. Mihiel, pp 234-248. Nothing like this had ever been tried before. It marked the beginning of the great strategical air operations away from the troops. Book call no. Washington, Smithsonian Institution Press, 1993.