Columbia subject headings:
Public utilities--Taxation--United States--Congresses.
Public utilities--United States--Valuation--Congresses.
Public utilities--Valuation--United States--Congresses.
Harvard subject headings:
Public utilities--Taxation--United States--Congresses.
Public utilities--United States--Valuation--Congresses.
Public utilities--Valuation--United States--Congresses.
Princeton subject headings:
Public utilities--Taxation--United States--Congresses.
Public utilities--United States--Valuation--Congresses.