Columbia subject headings:
Yeats, W. B. (William Butler), 1865-1939--Political and social views.
Harvard subject headings:
Ireland--Politics and government--20th century.
Politics and literature--Ireland--History--20th century.
Politics in literature.
Yeats, W. B. (William Butler), 1865-1939--Political and social views.
Princeton subject headings:
Yeats, W. B. (William Butler), 1865-1939--Political and social views.