Son of President Abraham Lincoln (1843–1926) who served as Secretary of War in the Garfield and Arthur administrations. Two ink signatures, “Robert T. Lincoln,” on individual off-white slips, one dated 1885, the other dated February 7, 1923. In fine condition, with slight feathering to earlier example, and faint vertical fold, collector’s notation, and marginal tape remnants to later example. R&R COA.