Union officer (1826-1905) and brother-in-law of William T. Sherman. He flanked the enemy at Antietam, and discovered correspondence between Jefferson Davis and Franklin Pierce. Original 2.25 x 4 carte-de-visite photo by Ster and Bro. of Louisville, signed below the image in black ink, “Hugh Ewing.” In fine condition, with mounting remnants on reverse. RR Auction COA.