Jean H. Baker, Mary Todd Lincoln: A Biography (New York: Norton, 1987); Joan E. Cashin, First Lady of the Confederacy: Varina Davis's Civil War (Cambridge, MA: Belknap Press of Harvard University Press, 2006); Catherine Clinton, Mrs. Lincoln: A Life (New York: HarperCollins, 2009); Daniel Mark Epstein, The Lincolns: Portrait of a Marriage (New York: Ballantine Books, 2008); Jennifer Fleischner, Mrs. Lincoln and Mrs. Keckly: The Remarkable Story of the Friendship Between a First Lady and a Former Slave (New York: Broadway Books, 2003); Ernest B. Furgurson, Freedom Rising: Washington in the Civil War (New York: Knopf, 2004); Becky Rutberg, Mary Lincoln's Dressmaker: Elizabeth Keckley's Remarkable Rise from Slave to White House Confidante (New York: Walker and Company, 1995); Justin G. Turner and Linda Levitt Turner, Mary Todd Lincoln: Her Life and Letters (New York: Knopf, 1972); and John E.