Columbia subject headings:
Advertising, Public service--Congresses.
Corrective advertising--Congresses.
Government advertising--Congresses.
Harvard subject headings:
Advertising, Public service--Congresses.
Corrective advertising--Congresses.
Government advertising--Congresses.
Princeton subject headings:
Advertising, Public service--Congresses.
Corrective advertising--Congresses.
Government advertising--Congresses.