Columbia subject headings:
Broadcasting--Law and legislation--United States--History.
Radio--Law and legislation--United States--History.
Television--Law and legislation--United States--History.
United States. Federal Communications Commission--History.
Harvard subject headings:
Broadcasting--Law and legislation--United States--History.
Radio--Law and legislation--United States--History.
Television--Law and legislation--United States--History.
United States. Federal Communications Commission--History.
Princeton subject headings: