Quote's original source is Hay's diary which is quoted in "Abraham Lincoln: A History", Volume 10, Page 292 by John G. Nicolay and John Hay

^ Donald 1996, pp. 598–599, 686.

^ Hoch, Bradley R. (September 4, 2001). The Lincoln Trail in Pennsylvania: A History and Guide. Penn State Press. pp. 121–123. ISBN 978-0-271-07222-7.

^ Trefousse, Hans L. (1989). Andrew Johnson: A Biography. W.W. Norton & Company. p. 194.

^ Steers 2010, p. 153; Donald 1996, p. 599.

^ Trostel 2002, pp. 31–58.

^ Trostel 2002, pp. 31–58; Goodrich 2005, pp. 231–238.

^ Peck, Garrett (2015). Walt Whitman in Washington, D.C.: The Civil War and America's Great Poet. Charleston, SC: The History Press. pp. 118–23. ISBN 978-1-62619-973-6.

^ Hodes 2015, p. 164.

^ Hodes 2015, pp. 197–199.

^ Hodes 2015, pp. 84, 86, 96–97.

^ "Survey of Historic Sites and Buildings – Lincoln Tomb, Illinois". National Park Service. Archived from the original on August 30, 2009.

^ Carwardine 2003, p. 4; Wilson 1999, p. 84.

^ Donald 1996, pp. 48–49, 514–515.

^ Lincoln, Abraham (2001) [1953]. "Handbill Replying to Charges of Infidelity". Collected Works of Abraham Lincoln. Volume 1. p. 383.

^ Jump up to: a b Noll 1992.

