Columbia subject headings:
History--Research--Ireland.
Ireland--History--16th century--Sources.
Ireland--History--17th century--Sources.
Harvard subject headings:
History--Research--Ireland.
Ireland--History--16th century--Sources.
Ireland--History--17th century--Sources.
Princeton subject headings:
History--Research--Ireland.
Ireland--History--16th century--Sources.
Ireland--History--17th century--Sources.