Columbia subject headings:
Harvard subject headings:
Armour, J. B. (James Brown), 1841-1928--Correspondence.
Politicians--Northern Ireland--Correspondence.
Presbyterian Church in Ireland--Clergy--Correspondence.
Presbyterian Church--Northern Ireland--Clergy--Correspondence.
Princeton subject headings:
Armour, J. B. (James Brown), 1841-1928--Archives.
Armour, J. B. (James Brown), 1841-1928--Correspondence.
Ireland--Politics and government--1837-1901.
Northern Ireland--History--Sources.
Northern Ireland--Politics and government.