Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Hawaii--History.
Chinese--Employment--Hawaii--History.
Contract labor--Hawaii--History.
Foreign workers--Hawaii--History.
Hawaii--Race relations--History.
Japanese--Employment--Hawaii--History.
Princeton subject headings:
Agricultural laborers--Hawaii--History.
Chinese--Hawaii--Employment--History.
Contract labor--Hawaii--History.
Foreign workers--Hawaii--History.
Hawaii--Race relations--History.
Japanese--Hawaii--Employment--History.