Columbia subject headings:
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--Politics and government--19th century.
Ireland--Politics and government--20th century.
Irish question.
Harvard subject headings:
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--Politics and government--19th century.
Ireland--Politics and government--20th century.
Irish question.
Princeton subject headings:
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--Politics and government--19th century.
Ireland--Politics and government--20th century.
Irish question.