Columbia subject headings:
Emerson, Ralph Waldo, 1803-1882.
Longfellow, Henry Wadsworth, 1807-1882.
Harvard subject headings:
Emerson, Ralph Waldo, 1803-1882
Longfellow, Henry Wadsworth, 1807-1882
Princeton subject headings:
Emerson, Ralph Waldo, 1803-1882.
Longfellow, Henry Wadsworth, 1807-1882.