Columbia subject headings:
Federal government--United States--Congresses.
United States--Politics and government--1945-1989--Congresses.
Harvard subject headings:
Federal government--United States--Congresses
United States--Politics and government--1945-1989--Congresses.
Princeton subject headings:
Federal government--United States--Congresses.
United States--Politics and government--1945-1989--Congresses.