Columbia subject headings:
Ireland--History--Rising of 1848.
O'Brien, William Smith, 1803-1864.
Revolutionaries--Ireland--Biography.
Harvard subject headings:
Ireland--History--Rising of 1848.
O'Brien, William Smith, 1803-1864.
Revolutionaries--Ireland--Biography
Princeton subject headings:
Ireland--History--Rising of 1848.
O'Brien, William Smith, 1803-1864.