{"product_id":"9781618212528","title":"Top Secret Files: The Civil War: Spies, Secret Missions, and Hidden Facts from the Civil War","description":"The pigpen cipher, the Devil's Coffee Mill, and germ warfare were all a part of the Civil War, but you won't learn that in your history books! Discover the truth about Widow Greenhow's spy ring, how soldiers stole a locomotive, and the identity of the mysterious \"Gray Ghost.\" Then learn how to make a cipher wheel and send secret light signals to your friends. It's all part of the true stories from the Top Secret Files: The Civil War. Take a look if you dare, but be careful! Some secrets are meant to stay hidden...","brand":"Sourcebooks","offers":[{"title":"Default Title","offer_id":47130280853744,"sku":"9781618212528","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781618212528_p0.jpg?v=1763854629","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781618212528","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}