No one knew the boy they called "Jumping Badger" would grow to become a great leader. Born on the banks of the Yellowstone River, Sitting Bull, as he was later called, was tribal chief and holy man of the Lakota Sioux tribe in a time of fierce conflict with the United States. As the government seized Native American lands, Sitting Bull relied on his military cunning and strong spirituality to drive forces out of his territory and ensure a future homeland for his people.

You want girl power? Meet Annie Oakley! Born in 1860, she became one of the best-loved and most famous women of her generation. She amazed audiences all over the world with her sharpshooting, horse-riding, action-packed performances. In an age when most women stayed home, she traveled the world and forged a new image for American women.

While other kids played sports, Steven Spielberg was writing scripts and figuring out camera angles. He went from entertaining his Boy Scout troop with home movies to amazing audiences around the world with epic blockbusters. He has directed four of the most successful films of all time and has won two Academy Awards for Best Director. From "Jaws" to "Lincoln," young readers and aspiring filmmakers will be fascinated by the life of this famous director.

Jorge Mario Bergoglio, aka Pope Francis, from Argentina, is the first Jesuit pope, the first from the Americas, and the first from the Southern Hemisphere. Since being elected pope he has shown a humbler, less formal approach to his office than his predecessors: a warm style that has been referred to as 'no frills.' His common touch and accessibility, as well as his insistence that the church be more open and welcoming, has quickly endeared him not only to Roman Catholics but to millions of others around the world.

Clarissa "Clara" Barton was a shy girl who grew up to become a teacher, nurse, and humanitarian. At a time when few women worked outside the home, she became the first woman to hold a government job, as a patent clerk in Washington, DC. In 1864, she was appointed "lady in charge" of the hospitals at the front lines of the Union Army, where she became known as the "Angel of the Battlefield." Clara Barton built a career helping others. She went on to found the American Red Cross, one of her greatest accomplishments, and one of the most recognized organizations in the world.