Baseball memorabilia collectors just love to get their hands on a ball covered with the autographs of a winning team’s players—and if it’s a lineup that made Major League history, then all the more prized is the collectible. This 19th-century handheld folding fan, covered with the names of U.S. officers who participated in America’s first clash with Korea, is somewhat the naval-history equivalent to that coveted spheroid. Now on display at the U.S. Naval Academy Museum, the fan was appropriated from a house near the site of the June 1871 clash between U.S. Navy and Marine forces and defenders of forts along the Han River. The denizens of the so-called “Hermit Kingdom” didn’t take too kindly to the sight of a five-vessel naval squadron entering their waters; the Americans, for their part, didn’t take too kindly to the fate of a U.S. merchant ship lost there five years earlier (she was burned and her crew slaughtered). The 1871 expeditionary force, commanded by Rear Admiral John Rodgers, had a twofold purpose: closure on the earlier incident, and keeping alive the earnest hope of opening Korea up to U.S. trade.