Columbia subject headings:
Espionage, British--France--History--18th century.
France--Foreign relations--Great Britain.
France--History--Revolution, 1789-1799--Military intelligence--Great Britain.
France--History--Revolution, 1789-1799--Secret service.
Great Britain--Foreign relations--France.
Intelligence officers--France--History--18th century.
Spies--England--France--History--18th century.
Harvard subject headings:
Espionage, British--France--History--18th century.
France--History--Revolution, 1789-1799.
France--Relations--Great Britain.
Great Britain--Relations--France.
Intelligence officers--France--History--18th century.
Princeton subject headings:
Espionage, British--France--History--18th century.
France--Foreign relations--Great Britain.
France--History--Revolution, 1789-1799--Military intelligence--Great Britain.
France--History--Revolution, 1789-1799--Secret service.
Great Britain--Foreign relations--France.
Intelligence officers--France--History--18th century.
Spies, English--France--History--18th century.