Columbia subject headings:
Harvard subject headings:
Black people--Great Britain--Social conditions
Slave trade--Great Britain--History--19th century.
Slavery--Great Britain--History--19th century.
Slaves--Emancipation--Great Britain--History--19th century.
Princeton subject headings:
Black people--Great Britain--Social conditions.
Slave trade--Great Britain--History--19th century.
Slavery--Great Britain--Emancipation--History--19th century.
Slavery--Great Britain--History--19th century.