Columbia subject headings:
Busch, Wilhelm, 1832-1908--Criticism and interpretation.
Harvard subject headings:
Busch, Wilhelm, 1832-1908--Catalogs.
Caricatures and cartoons--Germany--Catalogs.
German wit and humor, Pictorial--Catalogs.
Princeton subject headings:
Busch, Wilhelm, 1832-1908--Criticism and interpretation.