So many scholars, librarians, and friends have helped me during the writing of this book that to name some is to overlook others. Still, special thanks to Lincoln scholars Thomas Dyba, James Hickey, Mark Neely, Charles Strozier, Wayne Temple, and Doris Porter. The splendid edition of Mary Todd Lincoln's letters edited by Justin and Linda Levitt Turner has made my task incalculably easier. I am grateful as well to librarians and archivists at Transylvania University, the Lexington ( Kentucky) Public Library, the University of Kentucky Library, the Illinois Historical Library, the Chicago Historical Society, and the Library of Congress. Drs. Robinson Baker, Benjamin Baker, Mervyn Carey, William Fitzpatrick, Mel Prosen, William Speed, and Stewart Wolff gave patient instruction on medical matters.
My research has been generously supported by the Elizabeth Connolly Todd Foundation, established in 1970 by George L. and Elizabeth Connolly Todd at Goucher College, where my colleagues in the History Department— Peter Bardaglio, Julie Jeffrey, and Kent