Columbia subject headings:
Europe--History--1848-1871--Congresses.
France--Foreign relations--1852-1870.
France--Politics and government--1852-1870--Congresses.
Napoleon III, Emperor of the French, 1808-1873--Congresses.
Harvard subject headings:
France--Foreign relations--1852-1870.
France--History--Second Empire, 1852-1870.
Napoleon III, Emperor of the French, 1808-1873.
Princeton subject headings:
Europe--Foreign relations--France.
France--Foreign relations--1848-1870.
France--Foreign relations--Europe.
Napoleon III, Emperor of the French, 1808-1873.