Columbia subject headings:
Censorship.
Good and evil in literature.
Literature--History and criticism.
Prohibited books.
Harvard subject headings:
Good and evil in literature
Literature and morals
Literature, Modern--History and criticism
Literature--Aesthetics
Wit and humor, Juvenile
Wit and humor, Pictorial
Wit and humor--History and criticism
Princeton subject headings:
Censorship.
Good and evil in literature.
Literature--History and criticism.
Prohibited books.