Higginson's Henry Wadsworth Longfellow.
Carpenter's Henry Wadsworth Longfellow.
Robertson's Life of Henry Wadsworth Longfellow.
Carpenter's John Greenleaf Whittier.
Higginson's John Greenleaf Whittier.
Perry's John Greenleaf Whittier.
Pickard's Life and Letters of John Greenleaf Whittier, 2 vols.
Pickard's Whittier-Land.
Greenslet's James Russell Lowell, his Life and Work.
Hale's James Russell Lowell. (Beacon Biographies.)