Columbia subject headings:
Social problems in literature.
United States--In literature.
Whitman, Walt, 1819-1892--Criticism and interpretation.
Whitman, Walt, 1819-1892--Political and social views.
Harvard subject headings:
Literature and society--United States--History--19th century.
Social problems in literature.
United States--In literature.
Whitman, Walt, 1819-1892--Criticism and interpretation.
Whitman, Walt, 1819-1892--Political and social views.
Princeton subject headings:
Social problems in literature.
United States--In literature.
Whitman, Walt, 1819-1892--Criticism and interpretation.
Whitman, Walt, 1819-1892--Political and social views.