“Thomas Jefferson's Family”. Jefferson Quotes & Family Letters (Thomas Jefferson: Retirement Series). Thomas Jefferson Foundation, Inc.. February 3, 2018閲覧。
Matthew Yglesias (January 15, 2010). “Historic Sex Scandals”. ThinkProgress. July 2, 2014閲覧。
umw.edu
academics.umw.edu
“James Spence Monroe”. The Papers of James Monroe. University of Mary Washington. February 2, 2018閲覧。 “An unhappy event has occurr'd which has overwhelmed us with grief. At ten last night our beloved babe departed this life after several days sickness”
web.archive.org
“The Lincoln Boys”. Library of Congress. October 23, 2013時点のオリジナルよりアーカイブ。December 2, 2012閲覧。
“Roosevelt Genealogy”. fdrlibrary.marist.edu. Franklin D. Roosevelt Presidential Library and Museum. 29 May 2014時点のオリジナルよりアーカイブ。13 August 2016閲覧。
“James Spence Monroe”. The Papers of James Monroe. University of Mary Washington. February 2, 2018閲覧。 “An unhappy event has occurr'd which has overwhelmed us with grief. At ten last night our beloved babe departed this life after several days sickness”
