Columbia subject headings:
Art, Irish--Congresses.
Art, Medieval--Great Britain--Congresses.
Art, Medieval--Ireland--Congresses.
Harvard subject headings:
Art, Irish--Congresses.
Art, Medieval--Great Britain--Congresses.
Art, Medieval--Ireland--Congresses.
Princeton subject headings:
Art, Irish--Congresses.
Art, Medieval--Great Britain--Congresses.
Art, Medieval--Ireland--Congresses.