Columbia subject headings:
Carriers--United States--Congresses.
Corporation law--United States--Congresses.
Transportation--Law and legislation--United States--Congresses.
Harvard subject headings:
Carriers--United States.
Corporation law--United States.
Transportation--Law and legislation--United States
Princeton subject headings:
Carriers--United States--Congresses.
Corporation law--United States--Congresses.
Transportation--Law and legislation--United States--Congresses.