Kenneth L. Smith, Martin Luther King (Jr.), Ira G. Zepp (1986). “Search for the beloved community: the thinking of Martin Luther King, Jr”, Univ Pr of Amer
Benjamin Franklin, Horatio Hastings WELD (1849). “Benjamin Franklin: his Autobiography, with a narrative of his public life and services by H. H. Weld”, p.98
John Brown (1797). “The posthumous works of the late Rev. Mr. John Brown, minister of the Gospel at Haddington: with short memoirs, and a summary of what he uttered in his last illness”, p.20