Harriet Tubman, secret agent : how daring slaves and free blacks spied for the Union during the Civil War / Thomas B. Allen ; featuring illustrations by Carla Bauer.
Includes bibliographical references (p. 173-188) and index.
Summary
Provides a biography of this courageous ex-slave who worked to establish the Underground Railroad, became a Union Army spy, and helped more than seven hundred slaves find their way to freedom in the North.
