Columbia subject headings:
Harvard subject headings:
Black people--Great Britain
Celts--Great Britain
Great Britain--History
Princeton subject headings:
Africans--Great Britain--History.
Africans--Ireland--History.
Black people--Great Britain--History.
Black people--Ireland--History.
Celts.
Ethnology--Great Britain.
Ethnology--Ireland.
Great Britain--Civilization--African influences.
Ireland--Civilization--African influences.