Columbia subject headings:
Harvard subject headings:
Great Britain--Emigration and immigration.
Ireland--Emigration and immigration.
Princeton subject headings:
Assisted emigration--Great Britain--History--19th century.
Australia--Emigration and immigration--History--19th century.
Canada--Emigration and immigration--History--19th century.
Forced migration--Great Britain--History--19th century.
Great Britain--Emigration and immigration--History--19th century.
Ireland--Emigration and immigration--History--19th century.
New Zealand--Emigration and immigration--History--19th century.
United States--Emigration and immigration--History--19th century.