“Also quoted by Ida Tarbell, The Life of Abraham Lincoln: Drawn from Original Sources and Containing Many Speeches, Letters, and Telegrams Hitherto Unpublished, and Illustrated with Many Reproductions from Original Paintings, Photographs, etc, Volume 4 (1902), Lincoln History Society; and by William C. Whitney; in The Writings of Abraham Lincoln, v. 2' . (1905) Lapsley, Arthur Brooks, New York: G.P. Putnam's Sons”

Source: Wikiquote