Columbia subject headings:
Cost and standard of living--United States--History.
Income distribution--United States--History.
Wealth--United States--History.
Harvard subject headings:
Cost and standard of living--United States--History.
Income distribution--United States--History.
Wealth--United States--History.
Princeton subject headings:
Cost and standard of living--United States--History.
Income distribution--United States--History.
Wealth--United States--History.