Columbia subject headings:
Authors, Irish--20th century--Biography.
Ireland--History--19th century.
Irish Republican Army--Biography.
O'Malley, Ernie, 1897-1957.
Revolutionaries--Ireland--Biography.
Harvard subject headings:
Authors, Irish--20th century--Biography
Ireland--History--19th century.
Irish Republican Army--Biography.
O'Malley, Ernie, 1897-1957.
Revolutionaries--Ireland--Biography
Princeton subject headings:
Authors, Irish--20th century--Biography.
Irish Republican Army--Biography.
O'Malley, Ernie, 1897-1957.
Revolutionaries--Ireland--Biography.