Columbia subject headings:
Aeronautics, Military--United States--History.
Arnold, Henry Harley, 1886-1950.
Eaker, Ira, 1896-1987.
Spaatz, Carl, 1891-1974.
United States. Army. Air Corps--History.
Harvard subject headings:
Aeronautics, Military--United States--History
Arnold, Henry Harley, 1886-1950
Eaker, Ira, 1896-1987.
Spaatz, Carl, 1891-
United States. Army. Air Corps--History.
Princeton subject headings:
Aeronautics, Military--United States--History.
Arnold, Henry Harley, 1886-1950.
Eaker, Ira, 1896-1987.
Spaatz, Carl, 1891-
United States. Army. Air Corps--History.