Benjamin Franklin (1806). “The Complete Works, in Philosophy, Politics, and Morals, of the Late Dr. Benjamin Franklin: Now First Collected and Arranged: with Memoirs of His Early Life, Written by Himself ; in Three Volumes”, p.109
"Interview: Trae Tha Truth On Being Banned From Radio One & His Friendship With Lupe Fiasco". Interview with Maurice Bobb, www.complex.com. September 8, 2010.
Letter to Oliver Downing. "Diary and Letters of Rutherford Birchard Hayes: Nineteenth President of the United States". Book edited by Charles Richard Williams, The Ohio State Archaeological and Historical Society, March 15, 1889.