Columbia subject headings:
Harvard subject headings:
France--History, Military--1789-1815.
Napoleon I, Emperor of the French, 1769-1821--Relations with spies.
Schulmeister, Karl Ludwig, 1770-1853.
Spies--France--Biography.
Princeton subject headings:
France--History, Military--1789-1815.
Napoleon I, Emperor of the French, 1769-1821--Relations with spies.
Schulmeister, Karl Ludwig, 1770-1853.
Spies--France--Biography.