Columbia subject headings:
American poetry--20th century--History and criticism.
Politics and literature.
Harvard subject headings:
American poetry--20th century--History and criticism
Baraka, Amiri, 1934-2014
Experimental poetry
Olson, Charles John, 1910-1970.
Politics and literature
Rukeyser, Muriel, 1913-1980
Zukofsky, Louis, 1904-1978
Princeton subject headings:
American poetry--20th century--History and criticism.
Experimental poetry.
Politics and literature.