Columbia subject headings:
Cost and standard of living--United States.
Steel industry and trade--United States.
United Steelworkers of America.
Wages--Iron and steel workers--United States.
Wages--United States.
Harvard subject headings:
Cost and standard of living--United States.
Steel industry and trade--United States
United Steelworkers of America
Wages--United States.
Princeton subject headings:
Cost and standard of living--United States.
Steel industry and trade--United States.
United Steelworkers of America.
Wages--United States.