Columbia subject headings:
Labor supply--United States--History.
World War, 1939-1945--Manpower--United States--History.
Harvard subject headings:
Labor supply--United States--History.
World War, 1939-1945--Manpower--United States--History.
Princeton subject headings:
Labor supply--United States--History.
World War, 1939-1945--Manpower--United States--History.