^ Neill F. Sanders, " 'When A House Is on Fire': The English Consulates and Lincoln's Patronage Policy."Lincoln Herald (1981) 83#4 pp 579-59.

^ Kevin Peraino, Lincoln in the World: The Making of a Statesman and the Dawn of American Power (2014). pp 138–169.

^ Peraino, Lincoln in the World pp 3–16.

^ Donald 1996, pp. 586–587.

^ Harrison 2010, pp. 3–4.

^ Donald 1996, pp. 594–597.

^ "The United States Secret Service in History". The White House. January–March 1998. Retrieved November 13, 2022.

^ Donald 1996, p. 597; Martin 2010.

^ Steers 2010, p. 153.

^ Fox, Richard (2015). Lincoln's Body: A Cultural History. W. W. Norton & Company. ISBN 978-0-393-24724-4.

^ Abel, E. Lawrence (2015). A Finger in Lincoln's Brain: What Modern Science Reveals about Lincoln, His Assassination, and Its Aftermath. ABC-CLIO. Chapter 14. ISBN 978-1-4408-3118-8.

^ "OUR GREAT LOSS; The Assassination of President Lincoln". The New York Times. April 17, 1865. ISSN 0362-4331. Archived from the original on January 13, 2018. Retrieved April 12, 2016.

^ Hay, John (1915). The Life and Letters of John Hay Volume 1. Houghton Mifflin Company. Archived from the original on August 9, 2016. Retrieved July 9, 2018. 