Columbia subject headings:
Farm tenancy--Economic aspects--United States--History--Sources--Bibliography.
Southern Tenant Farmers' Union--History--Sources--Bibliography.
Harvard subject headings:
Farm tenancy--Economic aspects--United States--History--Sources--Bibliography.
Southern Tenant Farmers' Union--History--Sources--Bibliography.
Princeton subject headings:
Farm tenancy--Economic aspects--United States--History--Sources--Bibliography.
Southern Tenant Farmers' Union--History--Sources--Bibliography.