* Leo P. Brophy and George J. B. Fisher; "The Chemical Warfare Service: Organizing for War" Office of the Chief of Military History, 1959; L. P. Brophy, W. D. Miles and C. C. Cochrane, "The Chemical Warfare Service: From Laboratory to Field" (1959); and B. E. Kleber and D. Birdsell, "The Chemical Warfare Service in Combat" (1966). official US history;