Columbia subject headings:
Advertising, Political--United States.
Advertising--Social aspects--United States.
Advertising--United States.
Advocacy advertising--United States.
Harvard subject headings:
Advertising, Political--United States
Advertising--Social aspects--United States.
Advertising--United States
Advocacy advertising--United States.
Princeton subject headings:
Advertising, Political--United States.
Advertising--Social aspects--United States.
Advertising--United States.
Advocacy advertising--United States.