cover U.S. Sanitary/Christian Commission Covers, four covers, two have U.S. Christian Commission printed imprints (one 'Due 3' cover), one with U.S. Sanitary Commission shield design printed corner card, another has 'Soldier's Reading Room' boxed corner card, three are franked with average 3c Rose (65), other is stampless, one cover has original contents - a soldier's letter on printed letterhead, mostly fine lot