Son of President Abraham Lincoln (1843–1926) who served as secretary of war in the Garfield and Arthur administrations. Original 4.25 x 6.5 cabinet photo by Brandt of Chicago, signed on the reverse in fountain pen, “Robt. T. Lincoln.” In very good condition with light surface rubbing, mounting remnants and slight surface loss to top edge, some surface loss to bottom border, and mild soiling to reverse. RR Auction COA.