Columbia subject headings:
Espionage, British--France.
France--History--Revolution, 1789-1799.
Subversive activities--France.
Harvard subject headings:
Espionage, British--France.
France--History--Revolution, 1789-1799.
Subversive activities--France.
Princeton subject headings:
Espionage, British--France--History--18th century.
France--History--Reign of Terror, 1793-1794.
Subversive activities--France--History--18th century.