Garden City, NY, Doubleday, 1980. Strategy and Decisions in the Air War over Europe 1940-45 . Garden City, NY, Doubleday, 1982. Current Biography. 1942. New York, H.W. Wilson, 1942.
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General Hap Arnold and Dr. Theodore von Karman. Book call no. Henry H. Arnold, Military Aviator . 92 A755da Dictionary of American Biography. Supplement 4, edited by John A. Garraty and Edward T. James.