Columbia subject headings:
O'Casey, Sean, 1880-1964--Childhood and youth.
Harvard subject headings:
Dramatists, Irish--20th century--Biography.
O'Casey, Sean, 1880-1964--Childhood and youth.
Princeton subject headings:
Dramatists, Irish--20th century--Biography.
Ireland--Social life and customs--19th century.
O'Casey, Sean, 1880-1964--Childhood and youth.