Columbia subject headings:
Aeronautics, Military--United States--History.
Arnold, Henry Harley, 1886-1950.
Generals--United States--Biography.
United States. Air Force--Biography.
Harvard subject headings:
Aeronautics, Military--United States--History
Arnold, Henry Harley, 1886-1950
Generals--United States--Biography
United States. Air Force--Biography.
United States. Air Force--Officers--Biography.
Princeton subject headings:
Aeronautics, Military--United States--History.
Arnold, Henry Harley, 1886-1950.
Generals--United States--Biography.
United States. Air Force--Biography.