Columbia subject headings:
Harvard subject headings:
Aeronautics, Commercial--France--History
Air mail service--France--History.
Couzinet, René, 1904-1956.
Mermoz, Jean, 1901-1936.
Princeton subject headings:
Aeronautics, Commercial--France--History.
Air mail service--France--History.
Couzinet, René, 1904-1956.
Mermoz, Jean, 1901-1936.