Columbia subject headings:
Harvard subject headings:
Bureaucracy--United States--History--20th century.
Labor unions--United States--History--20th century
Personnel management--United States--History--20th century.
Working class--United States--History--20th century
Princeton subject headings:
Bureaucracy--United States--History--20th century.
Labor unions--United States--History--20th century.
Personnel management--United States--History--20th century.
Working class--United States--History--20th century.