Columbia subject headings:
Whitman, Walt, 1819-1892--Criticism and interpretation.
Harvard subject headings:
Whitman, Walt, 1819-1892--Criticism and interpretation.
Whitman, Walt, 1819-1892. Leaves of grass
Princeton subject headings:
Whitman, Walt, 1819-1892--Criticism and interpretation.
Whitman, Walt, 1819-1892. Leaves of grass.