10 folders and 1 oversize folder of material relating to Robert Todd Lincoln consisting of correspondence, invitations, railroad passes (1904), certificates, and other items by or to Robert Todd Lincoln. Concerning his father, Abraham Lincoln, there is a discussion of the Healy portraits and of various photographic images, the Bixby letter, the Gettysburg Address, Barnard's statue, Lincoln's habits and physical appearance, ancestors and descendants, nickname, and library. Included is an undated letter giving a history of the origin of G. P. A. Healy’s painting The Peacemakers and commenting on Healy’s portrait of Abraham Lincoln; a letter, dated Feb. 16, 1918, regarding the site for the Chicago statue of Abraham Lincoln by Augustus Saint-Gaudens; a letter to Francis Bicknell Carpenter, dated Dec. 24, 1866, favorably comparing Carpenter’s portrait of Abraham Lincoln to that by William E. Marshall; and various letters regarding the authenticity of an early daguerreotype portrait of Abraham Lincoln.