Columbia subject headings:
Postal rates--United States.
United States Postal Service. Board of Governors--Evaluation.
United States. Postal Rate Commission--Evaluation.
Harvard subject headings:
Postal rates--United States.
United States Postal Service. Board of Governors--Evaluation.
United States. Postal Rate Commission--Evaluation.
Princeton subject headings:
Postal rates--United States.
United States Postal Service. Board of Governors--Evaluation.
United States. Postal Rate Commission--Evaluation.