Columbia subject headings:
Frederick III, German Emperor, 1831-1888.
Germany--History--1789-1900.
Germany--Kings and rulers--Biography.
Harvard subject headings:
Frederick III, German Emperor, 1831-1888.
Germany--Kings and rulers--Biography.
Princeton subject headings:
Frederick III, German Emperor, 1831-1888.
Germany--History--1789-1900.
Germany--Kings and rulers.