Union general (1816–1870) whose most decisive victory earned him the sobriquet ‘Rock of Chickamauga.’ Bold war-dated endorsement, signed in ink, “Geo. H. Thomas,” dated Nov. 13, 1863, on an off-white 3.75 x 5.25 sheet. In very good condition, with light surface rubbing, jagged edges, and some light soiling along the left edge. RRAuction COA.