"1800 - 1899" . . "United States" . . "United States." . "Underground movements, War." . . . . "Spies" . . . . . . . "Tells the stories of spies on both sides of the American Civil War."@en . "History"@en . . . "History" . . "Tells the stories of spies on both sides of the American Civil War." . "Juvenile works"@en . . . "Juvenile works" . . . . "Civil War spies : behind enemy lines"@en . . "Civil War spies : behind enemy lines" . . . "Biography"@en . . "Biography" . . . . . . . "Spies." . . "Spies Confederate States of America Biography Juvenile literature." . . "Spies United States History 19th century Juvenile literature." . . "Secret service." . . "Spies Confederate States of America History Juvenile literature." . . "Spies United States Biography Juvenile literature." . . "American Civil War (1861-1865)" . . .