Columbia subject headings:
Harvard subject headings:
Cuba--Emigration and immigration--History--20th century.
Foreign workers, Antillean--Cuba--History--20th century.
Sugar trade--Cuba.
Working class--Cuba.
Princeton subject headings:
Black people--Cuba--History--20th century.
Cuba--Emigration and immigration--History--20th century.
Cuba--Race relations.
Sugarcane industry--Cuba--History--20th century.
West Indians--Cuba--History--20th century.
West Indies--Emigration and immigration--Economic aspects.