Columbia subject headings:
Liberalism--United States--History--20th century.
United States--Politics and government--1945-1989.
Harvard subject headings:
Liberalism--United States--History--20th century
New Left.
United States--Politics and government--1945-1989.
Princeton subject headings:
Liberalism--United States--History--20th century.
United States--Politics and government--1945-1989.