Sos! Communicating By Morse Code
By Unknown Author.
Description
From the back of the book: "Do you have a secret that you want to share with a friend, but you don't want anyone else to hear? Why not put it in code? Morse code is a system of dots and dashes which represent the letters of the alphabet. So if you know your ABC's, you can learn Morse Code!" - from Amzon
ISBN(s)
188427014X, 9781884270147