The Codebreaking Club

Secret Ciphers Snail Mail Club Decipher real ciphered letters and telegrams from world history. Learn new codes and explore secrets of the past monthly. Each envelope includes one secret code and one instruction sheet, with a history lesson on your latest code. Featuring secret codes from: World War II (WWII), World War I (WWI), the American Civil War, the American Revolution, the English Civil War, the Spanish-American War, & more.