1. J.R. Wood, ‘Chemical Warfare — A Chemical and Toxicological Review’, American Journal of Public Health, 34 (1946), pp. 455–460.
2. The 12th Earl of Dundonald, My Army Life, London: Arnold (1926), p. 330.
3. Alden H. Waitt, Gas Warfare. The Chemical Weapon. Its Use and Protection Against It, New York: Duell, Sloane & Pearce (1942), pp. 7–11.