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...
This is Book 8 in the Top Secret Files of History Series. See all Top Secret Files of History books here.
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Stephanie Bearce is a writer, teacher, and history detective. She loves tracking down spies and uncovering secret missions from the comfort of her library in St. Charles, MO. When she isn't writing or teaching, Stephanie loves to travel the world and go on adventures with her husband, Darrell.
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