Columbia subject headings:
American poetry--20th century.
Harvard subject headings:
Aiken, Conrad, 1889-1973
American poetry--20th century
American poetry--20th century--History and criticism
Crane, Hart, 1899-1932.
Cummings, E. E. (Edward Estlin), 1894-1962--Criticism and interpretation.
Dickinson, Emily, 1830-1886
Moore, Marianne, 1887-1972.
Robinson, Edwin Arlington, 1869-1935
Princeton subject headings:
American poetry--20th century--History and criticism.
American poetry--20th century.