John Keats (2015). “John Keats - The Man Behind The Lyrics: Life, letters, and literary remains: Complete Letters and Two Extensive Biographies of one of the most beloved English Romantic poets”, p.414, e-artnow
Mark Twain (2017). “MARK TWAIN: 12 Novels, 195 Short Stories, Autobiography, 10 Travel Books, 160+ Essays & Speeches (Illustrated): Including Letters & Biographies – The Complete Works of Mark Twain: The Adventures of Tom Sawyer & Huckleberry Finn, The Innocents Abroad, Yankee in King Arthur's Court, Life on the Mississippi…”, p.8407, e-artnow