Columbia subject headings:
Ireland--Politics and government--1837-1901--Sources.
Ireland--Politics and government--1901-1910--Sources.
Ireland--Politics and government--1910-1921--Sources.
Harvard subject headings:
Ireland--History--1837-1901.
Ireland--History--20th century.
Princeton subject headings:
Ireland--Politics and government--1837-1901.
Ireland--Politics and government--20th century.