Columbia subject headings:
Political postcards--Austria.
Political postcards--Germany.
World War, 1914-1918--Austria--Propaganda--Pictorial works.
World War, 1914-1918--Germany--Propaganda--Pictorial works.
World War, 1914-1918--Posters.
Harvard subject headings:
Political postcards--Austria.
Political postcards--Germany.
World War, 1914-1918--Austria--Propaganda--Pictorial works.
World War, 1914-1918--Germany--Propaganda--Pictorial works.
World War, 1914-1918--Posters
Princeton subject headings:
German literature--20th century--History and criticism.
Political postcards--Austria.
Political postcards--Germany.
Propaganda, German.
World War, 1914-1918--Caricatures and cartoons.
World War, 1914-1918--Propaganda.