Sullivan, George Harriet Tubman. - New York, NY : Scholastic, 2001. - 125 - In Their Own Words . Using a variety of primary sources this biography of Harriet Tubman describes the life of a former slave who was responsible for helping many other slaves to freedom. ISBN: 0439326672 Subjects--Topical Terms: Tubman, Harriet, 1820-1913Slaves - United States