Samuel Taylor Coleridge, May Byron, William Hazlitt, James Gillman (2015). “Samuel Taylor Coleridge: The Man Behind The Lyrics (Illustrated Edition): Autobiographical Works (Memoirs, Complete Letters, Literary Introspection, Thoughts and Notes on Poetry); Including Extensive Biographies and Studies on S. T. Coleridge”, p.1304, e-artnow
Abraham Lincoln, Don Edward Fehrenbacher (1977). “Abraham Lincoln, a Documentary Portrait Through His Speeches and Writings”, p.39, Stanford University Press
Arthur Conan Doyle (2016). “Sherlock Holmes - The Novels: A Study in Scarlet, The Sign of the Four, The Hound of the Baskervilles, The Valley of Fear”, p.356, BoD - Books on Demand