Columbia subject headings:
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Ireland--Politics and government--1910-1921.
Nationalism--Ireland--History--20th century.
Harvard subject headings:
Ireland--History--1910-1921
Ireland--Politics and government--1910-1921
Nationalism--Ireland--History--20th century
Princeton subject headings:
Ireland--History--1910-1921.
Ireland--Politics and government--1910-1921.