Columbia subject headings:
Harvard subject headings:
Composers--Ireland--Biography.
Hughes, Seamus, 1881-1943.
Ireland--History--20th century--Biography.
Labor unions--Ireland--Officials and employees--Biography.
Politicians--Ireland--Biography
Princeton subject headings:
Hughes, Seamus, 1881-1943.
Ireland--History--Easter Rising, 1916--Biography.
Irish language--Revival--Biography.
Labor unions--Ireland--Biography.
Socialism and Christianity--Catholic Church--Ireland--Biography.