Columbia subject headings:
Income distribution--United States--Congresses.
Income tax--United States--Congresses.
Wealth--United States--Congresses.
Harvard subject headings:
Income distribution--United States--Congresses.
Income tax--United States--Congresses.
Wealth--United States--Congresses.
Princeton subject headings:
Income distribution--United States--Congresses.
Income tax--United States--Congresses.
Wealth--United States--Congresses.