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