Columbia subject headings:
Harvard subject headings:
Poets, Irish--19th century--Correspondence.
Poets, Irish--20th century--Correspondence.
Yeats, W. B. (William Butler), 1865-1939. Correspondence
Princeton subject headings:
Poets, Irish--20th century--Correspondence.
Yeats, W. B. (William Butler), 1865-1939. Correspondence.