Garden City, NY, Doubleday, 1982. Current Biography. 1942. New York, H.W. Wilson, 1942. Book call no. 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. New York, Scribner, 1974. Henry H. Arnold, pp 27-30.