Columbia subject headings:
Labor supply--United States.
Reconstruction (1939-1951)--United States.
Unemployed--United States.
Harvard subject headings:
Labor supply--United States.
Reconstruction (1939-1951)--United States
Unemployed--United States
Princeton subject headings:
Labor supply--United States.
Reconstruction (1939-1951)--United States.
Unemployed--United States.