Harriet Tubman, Secret Agent: How Daring Slaves and Free Blacks Spied for the Union During the Civil War (Paperback) - How Daring Slaves and Free Blacks Spied for the Union During the Civil War
Mr. Lincoln's High-Tech War: How the North Used the Telegraph, Railroads, Surveillance Balloons, Ironclads, High-Powered Weapons, and More to Win t (Hardcover)
Harriet Tubman, Secret Agent: How Daring Slaves and Free Blacks Spied for the Union During the Civil War (Library Binding) - How Daring Slaves and Free Blacks Spied for the Union During the Civil War
