Columbia subject headings:
Harvard subject headings:
France--Foreign relations--Spain.
France--History--Consulate and First Empire, 1799-1815.
Napoleon I, Emperor of the French, 1769-1821
Spain--Foreign relations--France.
Spain--History--Charles IV, 1788-1808.
Princeton subject headings:
Napoleon I, Emperor of the French, 1769-1821.
Spain--History--Napoleonic Conquest, 1808-1813.