Columbia subject headings:
Discrimination in employment--Panama--Panama Canal--History.
Foreign workers, Antillean--Panama--Panama Canal--History.
Panama Canal (Panama)--History.
Panama Canal Strike, Panama, 1920.
Racism--Panama--Panama Canal--History.
Harvard subject headings:
Black people--Panama--Social conditions.
Foreign workers--Panama--Social conditions.
Panama Canal (Panama)--History.
Panama--Emigration and immigration.
Princeton subject headings: