Columbia subject headings:
Labor policy--United States--History--20th century.
Women--Employment--United States--History--20th century.
Women--Government policy--United States--History--20th century.
Harvard subject headings:
Labor policy--United States--History--20th century
Women--Employment--United States--History--20th century
Women--Government policy--United States--History--20th century.
Princeton subject headings:
Labor policy--United States--History--20th century.
Women--Employment--United States--History--20th century.
Women--Government policy--United States--History--20th century.