Columbia subject headings:
Harvard subject headings:
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--History--1910-1921.
Ireland--Politics and government--1910-1921.
Princeton subject headings:
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--History--1910-1921.
Ireland--Politics and government--1910-1921.