Columbia subject headings:
Harvard subject headings:
Authors--Political and social views
Literature and society--History--20th century.
Literature, Modern--20th century--History and criticism
Politics and literature--History--20th century.
Princeton subject headings:
Authors--Political and social views.
Literature and society--History--20th century.
Literature, Modern--20th century--History and criticism.
Politics and literature--History--20th century.