Columbia subject headings:
Community organization--Illinois--Chicago--History.
Mass production--Illinois--Chicago--History.
Packing-house workers--Illinois--Chicago--History.
Quality of work life--Illinois--Chicago--History.
Harvard subject headings:
Community organization--Illinois--Chicago--History.
Mass production--Illinois--Chicago--History.
Packing-house workers--Illinois--Chicago--History.
Packing-house workers--Labor unions--Illinois--Chicago--History.
Quality of work life--Illinois--Chicago--History.
Working class--Illinois--Chicago--History.
Princeton subject headings:
Community organization--Illinois--Chicago--History.
Mass production--Illinois--Chicago--History.
Packing-house workers--Illinois--Chicago--History.
Quality of work life--Illinois--Chicago--History.