Harriet Tubman was born a slave in 1820. She escaped as a young woman an made her way to St. Catharine's, Ontario but returned to the United States nineteen times working as a "conductor" on the "Underground Railroad." When the American Civil War started, she returned to the U.S. to work as a nurse and scout for the Union side.
Library and Archives Canada
Wilbur H. Siebert, The Underground Railroad from Slavery to Freedom, The Macmillan Company, 1898
1850s or 1860s