Union general and onetime commander of the Army of the Potomac (1824–1881); the distinctive whiskers he sported gave rise to the word ‘sideburns.’ Vintage 4.25 x 6.5 cabinet photo of Burnside sporting his trademark whiskers, by Brady’s National Portrait Gallery, signed in the lower border in black ink, “A. E. Burnside.” In fine condition, with a bit of scattered light spotting to image, mild bumps to corners, and slight toning to borders. RR Auction COA.