Columbia subject headings:
Yeats, W. B. (William Butler), 1865-1939--Dramatic works.
Yeats, W. B. (William Butler), 1865-1939--Philosophy.
Harvard subject headings:
Princeton subject headings:
Yeats, W. B. (William Butler), 1865-1939--Dramatic works.
Yeats, W. B. (William Butler), 1865-1939--Metaphysics.
Yeats, W. B. (William Butler), 1865-1939--Symbolism.