Chelsea Clinton's third book hits US stores Chelsea Clinton's third book hits US stores -- a 28-page hardback picture book for children called "She Persisted" about 13 diverse American women who "changed the world." Her mother makes only a cameo appearance but included in the line-up are Oprah Winfrey, deaf and blind champion Helen Keller, former slave Harriet Tubman, the first American woman in space Sally Ride and Olympic sprint champion Florence Griffith Joyner. IMAGES