Columbia subject headings:
Ireland--Church history--Congresses.
Irish--Foreign countries--Religion--Congresses.
Northern Ireland--Church history--Congresses.
Scots-Irish--Foreign countries--Religion--Congresses.
Harvard subject headings:
Ireland--Church history--Congresses.
Irish--Foreign countries--Religion--Congresses.
Scots-Irish--Religion--Congresses.
Princeton subject headings:
Ireland--Church history--Congresses.
Irish--Foreign countries--Religion--Congresses.
Northern Ireland--Church history--Congresses.
Scots-Irish--Foreign countries--Religion--Congresses.