Columbia subject headings:
Great Britain--Emigration and immigration--History--18th century.
North America--Emigration and immigration--History--18th century.
Harvard subject headings:
Great Britain--Emigration and immigration--History--18th century.
North America--Emigration and immigration--History--18th century.
Princeton subject headings:
Great Britain--Emigration and immigration--History--18th century.
North America--Emigration and immigration--History--18th century.