Henry Wadsworth Longfellow (1888). “Longfellow's Days: The Longfellow Prose Birthday Book : Extracts from the Journals and Letters of H. W. Longfellow”
Alexander Pope, William Warburton (1757). “The Works of Alexander Pope: Esq., with His Last Corrections, Additions, and Improvements; as They Were Delivered to the Editor a Little Before His Death; Together with the Commentaries and Notes of Mr. Warburton”, p.148