Washington: Government Printing Office, 1917. Black and white halftone photographs. Stapled wraps. Octavo. 28 pages. Fine, with a few slight rubs along spine and a shallow crease to top fore corner.
Summarizes the anti-aircraft weapons and capabilities of Italy, France, Germany, England, and the United States in World War I as of April, 1917. Draws conclusions based thereupon this information and what had been learned about defending against airplane to that time.