Columbia subject headings:
Great Britain--Relations--Ireland.
Ireland--History--1910-1921.
Ireland--Relations--Great Britain.
Irish Republican Army--History.
Harvard subject headings:
Great Britain--Relations--Ireland.
Ireland--History--1910-1921.
Ireland--History--War of Independence, 1919-1921.
Ireland--Relations--Great Britain.
Irish Republican Army--History.
Princeton subject headings:
Great Britain--Relations--Ireland.
Ireland--History--1910-1921.
Ireland--Relations--Great Britain.
Irish Republican Army--History.