Alexander Pope, William Warburton (1751). “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.49
Henry David Thoreau (2017). “HENRY DAVID THOREAU – The Man, The Philosopher & The Trailblazer (Illustrated): Biographies, Memoirs, Autobiographical Books & Personal Letters (Including Walden, A Week on the Concord and Merrimack Rivers, The Maine Woods, Cape Cod, A Yankee in Canada…)”, p.1353, e-artnow