Columbia subject headings:
Harvard subject headings:
Great Britain--Foreign relations--1910-1936.
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--Politics and government--1910-1921.
Irish question.
World War, 1914-1918--Diplomatic history
Princeton subject headings:
Great Britain--Foreign relations--1910-1936.
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--Politics and government--1910-1921.
Irish question.
World War, 1914-1918--Diplomatic history.