Columbia subject headings:
Aeronautics--History--18th century.
Balloons--History--18th century.
Harvard subject headings:
Aeronautics--France--History
Aeronautics--France--Social aspects.
Aircraft industry--France--History.
Balloons--France--History.
Enlightenment--France
France--History--18th century.
Princeton subject headings:
Aeronautics--History--18th century.
Balloons--History--18th century.