Columbia subject headings:
Families--France--History--18th century.
France--Social conditions--18th century.
Lettres de cachet.
Harvard subject headings:
Families--France--History--18th century.
France--Social conditions--18th century.
Lettres de cachet.
Princeton subject headings:
Families--France--History--18th century.
France--Social conditions--18th century.
Lettres de cachet.