Columbia subject headings:
Harvard subject headings:
Industrial relations--United States--History
Labor policy--United States--History
Labor unions--United States--History
World War, 1939-1945--Manpower--United States.
Princeton subject headings:
Industrial relations--United States--History.
Labor policy--United States--History.
Labor unions--United States--History.
World War, 1939-1945--Manpower--United States.