Letter "to a leading editor" on April 10, 1875. "The Life Public Services and Select Speeches of Rutherford B. Hayes", edited by James Quay Howard, ch. X, p. 144, www.gutenberg.org. 2007.
Diary entry. "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, February 27, 1890.
Diary entry. "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 14, 1877.