^ Jump up to: a b Zeitz, Joshua (November 4, 2018). "Democrats Aren't Moving Left. They're Returning to Their Roots". Politico. Retrieved November 17, 2018.

^ Smith 2007, pp. 584–85.

^ "Medical Research Pays Off for All Americans". NIH Medline Plus. National Institutes of Health. Summer 2007. Retrieved July 25, 2014.

^ Hastings, Max (January 19, 2009). "Franklin D Roosevelt: The man who conquered fear". The Independent. Retrieved July 25, 2014.

^ Burns 1970, p. 448.

^ Lerner, Barron H. (November 23, 2007). "How Much Confidence Should We Have in the Doctor's Account of FDR's Death?". History News Network. George Washington University.

^ Bruenn, Howard G. (April 1970). "Clinical notes on the illness & death of President Franklin D. Roosevelt". Annals of Internal Medicine. 72 (4): 579–91. doi:10.7326/0003-4819-72-4-579. PMID 4908628.

^ Gunther 1950, pp. 372–74.

^ Dallek 2017, pp. 618–19.

^ Smith 2007, pp. 617–19.

^ Jordan 2011, p. 321.

^ Burns 1970, pp. 533, 562.

^ Dallek 1995, p. 520.

^ Burns 1970, p. 587.

^ "Franklin D. Roosevelt Day by Day – April". In Roosevelt History. Franklin D. Roosevelt Presidential Library and Museum Collections and Programs. Retrieved May 14, 2012.

