^"Harris, John Spafford". Biographical Directory of the United States Congress. مؤرشف من الأصل في 2018-09-26. اطلع عليه بتاريخ 2012-07-30.
^History of Montana, 1739-1885 (Chicago: Warner, Beers, and Co., 1885), 1216.
^Howard J. Jones, "Biographical Sketches of Members of the 1868 Louisiana State Senate," The Journal of the Louisiana Historical Association, vol. 19, no. 1 (winter, 1978), 80-82.