Columbia subject headings:
Christian antiquities--Ireland.
Crosses--Ireland.
Ireland--Antiquities.
Ireland--Church history--To 1172.
Ireland--Civilization.
Megalithic monuments--Ireland.
Missions--Europe.
Harvard subject headings:
Christian antiquities--Ireland.
Crosses--Ireland.
Ireland--Antiquities.
Ireland--Church history--To 1172.
Ireland--Civilization.
Megalithic monuments--Ireland
Missions--Europe
Princeton subject headings:
Christian antiquities--Ireland.
Crosses--Ireland.
Ireland--Antiquities.
Ireland--Church history--To 1172.
Ireland--Civilization.
Megalithic monuments--Ireland.
Missions--Europe.