Washington, (DC): U.S. Government Printing Office, 1927. 8vo. 36 pp. Illustrated, 28 plates. Original illustrated yellow wrappers (institutional stamp on outer wrappers). Very good. Item #35230
First edition. Eight pages of text describe courses and qualifications for training; the plates picture airfields, planes, flying formations, parachute jumping, etc. Revised editions were published through 1939.