Columbia subject headings:
Canada--Emigration and immigration--Government policy--History.
Canada--Emigration and immigration--History.
Foreign workers--Canada--History.
Labor unions--Canada--History.
Race discrimination--Canada--History.
Harvard subject headings:
Canada--Emigration and immigration--Government policy--History.
Canada--Emigration and immigration--History.
Immigrants--Employment--Canada--History.
Labor unions--Canada--History
Race discrimination--Canada--History.
Princeton subject headings:
Canada--Emigration and immigration--Government policy--History.
Canada--Emigration and immigration--History.
Immigrants--Employment--Canada--History.
Labor unions--Canada--History.
Race discrimination--Canada--History.