Columbia subject headings:
Harvard subject headings:
Bismarck, Otto, Fürst von, 1815-1898--Caricatures and cartoons.
Bismarck, Otto, Fürst von, 1815-1898--Portraits.
Postcards--Germany--History--19th century.
Princeton subject headings:
Bismarck, Otto, Fürst von, 1815-1898--Caricatures and cartoons.
Bismarck, Otto, Fürst von, 1815-1898--Portraits.
Portraits.
Postcards--Germany.