NEW YORK (AP) — Olympic gold medalist Katie Ledecky has written a memoir, reflecting on a life she can hardly believe is her own. Simon & Schuster announced Thursday that the celebrated swimmer's “Just Add Water” will be published June 11. Ledecky, a two-time winner of The Associated Press Female Athlete of the Year award, is a seven-time gold medal winner who has won more individual Olympic races than any female swimmer in history.