^ Jump up to: a b Hopkins, John Tyler and the Presidential Succession

^ Jump up to: a b John Tyler (April 9, 1841) Upon Assuming the Office of President of the United States

^ McCormick 2002, pp. 141–142.

^ Jump up to: a b The White House, Anna Tuthill Symmes Harrison

^ Feerick, John. "Essays on Article II: Presidential Succession". The Heritage Guide to the Constitution. The Heritage Foundation. Retrieved June 12, 2018.

^ "A controversial President who established presidential succession". Constitution Daily. National Constitution Center. March 29, 2017. Retrieved March 11, 2019.

^ Rankin, Robert S. (February 1946). "Presidential Succession in the United States". The Journal of Politics. 8 (1): 44–56. doi:10.2307/2125607. JSTOR 2125607. S2CID 153441210.

^ Abbott, Philip (December 2005). "Accidental Presidents: Death, Assassination, Resignation, and Democratic Succession". Presidential Studies Quarterly. 35 (4): 627–645. doi:10.1111/j.1741-5705.2005.00269.x. JSTOR 27552721.

^ Madison & Sandweiss 2014, p. 47.

^ Greene 2007, p. 100.

^ Damon, Allan L. (June 1974). "Presidential Expenses". American Heritage. 25 (4). Archived from the original on January 7, 2009. Retrieved February 10, 2009.

^ 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? 