Columbia subject headings:
Harvard subject headings:
Ireland--Foreign relations.
Ireland--History--1922-
Neutrality--Ireland--History--20th century.
World War, 1939-1945--Diplomatic history.
Princeton subject headings:
Ireland--Politics and government--1922-1949.
Neutrality--Ireland.
World War, 1939-1945--Ireland.
World War, 1939-1945--Participation, Irish.