Columbia subject headings:
Hoover, Herbert, 1874-1964--Caricatures and cartoons.
Harvard subject headings:
Hoover, Herbert, 1874-1964--Caricatures and cartoons.
Hoover, Herbert, 1874-1964--Cartoons, satire, etc.
Princeton subject headings:
Hoover, Herbert, 1874-1964--Caricatures and cartoons.