Xavier Riddle travels back in time to meet heroes from the past - from Eleanor Roosevelt to Leonardo da Vinci. I am Wilma Rudolph I am Jonas Salk I am Confuscius I am Sacagawea I am Cesar Chavez I am Dolores Huerta I am Mary Anning I am Charlie Chaplin I am Billie Jean King I am Arthur Ashe I am James Naismith I am Temple Grandin I am Albert Einstein I am Carol Burnett