Correspondence, memoranda, journals, notebooks, drafts and proofs of Arnold's memoirs, Global Mission (1949), articles, speeches, reports, orders, printed material, photographs, and other papers relating chiefly to the development of military aeronautics in the United States and to aeronautical policies and events of World War II. Documents Arnold's service (1938-1946) as chief and commanding general of the United States Army Air Corps (later the U.S. Army Air Forces) and as a member of the Joint and Combined Chiefs of Staff (1941-1945) participating in Allied conferences and wartime inspection trips. Also documents Arnold's early career as an aviator including his training by the Wright brothers aviation company; his role in the development of commercial aeronautics including his air mail charter from the U.S. postmaster general and organization of Pan American Airways together with Carl Spaatz, Jack Jouett, and John J. Montgomery; and the investigation into the role of the U.S. Army Air Forces during the attack on Pearl Harbor. Includes material pertaining to Arnold's personal and professional activities following his retirement, his residence in Sonoma, Calif., and Arnold family matters. Scrapbooks (1941-1989) of Arnold's wartime aide, Jo Hubbard Chamberlin, contain memoranda, reports, speeches, military papers, printed matter, and other papers relating to Chamberlin's assignment to the Army Air Forces Office of Information Services, the Aleutian Islands campaign, and his trip to Germany at the end of the war.

a Correspondents include Hans Christian Adamson, Frank Maxwell Andrews, Bernard M. Baruch, Eugene H. Beebe, Lawrence Dale Bell, Follet Bradley, Malin Craig, James Harold Doolittle, Donald W. Douglas, Ira Eaker, Robert L. Eichelberger, Dwight D. Eisenhower, Joseph E. Elliott, Barney McKinney Giles, Millard Fillmore Harmon, Sir Arthur Travers Harris, Charles (Portal) Hungerford, James Howard Kindelberger, Ernest Joseph King, Laurence Sherman Kuter, Charles A. Lindbergh, Robert A. Lovett, James M. Magee, George C. Marshall, Glenn L. Martin, Louis Marx, Robert Andrews Millikan, John Knudsen Northrop, Edwin Pederson, Eddie Rickenbacker, Horace Weeks Shelmire, Carl Spaatz, Edward R. Stettinius, Guy W. Vaughn, Theodore von Kármán, Jack Warner, Burdette S. Wright, Orville Wright, and Wilbur Wright.