Columbia subject headings:
Great Britain--Foreign relations--Ireland--Early works to 1800.
Ireland--Foreign relations--Great Britain--Early works to 1800.
Ireland--History--Union, 1801.
Ireland--Politics and government--1760-1820--Early works to 1800.
Unionism (Irish politics)--Early works to 1800.
Harvard subject headings:
Ireland--History--Union, 1801.
Ireland--Politics and government.
Princeton subject headings: