Columbia subject headings:
Yeats, W. B. (William Butler), 1865-1939.
Harvard subject headings:
Ireland--In literature.
Ireland--Intellectual life--20th century.
Poets, Irish--20th century--Biography.
Yeats, W. B. (William Butler), 1865-1939
Princeton subject headings:
Yeats, W. B. (William Butler), 1865-1939--Criticism and interpretation.