Bauman, Barry. (2012) Case Study: The Demise of Mary Lincoln: An Artistic Conspiracy.[1] Abraham Lincoln Presidential Library and Museum Collection file LR 938.
According to Harold Holzer, "The Inner Life of Abraham Lincoln ... was actually nothing more than a presumptuously re-titled edition of Six Months at the White House (its text unchanged)." "Lincoln Through the Eyes of History," Lincoln Lore
"Mrs. H.S. Carpenter". The New York Times. October 5, 1960. Retrieved July 10, 2020.
nytimes.com
This quote is drawn from Barry Bauman's Case Study: The Demise of Mary Lincoln: An Artistic Conspiracy.
Cohen, Patricia (2012-02-11). "Mrs. Lincoln, I Presume? Well, as It Turns Out ..."The New York Times at NYTimes.com. Retrieved 2012-02-14. See portrait here.