Columbia subject headings:
Browning, Robert, 1812-1889.
Liberty.
Tennyson, Alfred Tennyson, Baron, 1809-1892.
Wordsworth, William, 1770-1850.
Harvard subject headings:
Browning, Robert, 1812-1889.
Liberty
Tennyson, Alfred Tennyson, Baron, 1809-1892.
Wordsworth, William, 1770-1850
Princeton subject headings: