cipher and telegraph codes

Readers can anticipate an intriguing overview of the ciphers, codes, algorithms, and keys used in real-life situations to keep peoples' information safe and secure.

A rare look at the Nazi military secrets of World War II. This is the first fully detailed account of the greatest code breaking coup of all time.

This revealing book traces codes throughout history, from an encryption device used by the Spartans in 400 B.C. to the Enigma Code of the 1940s, pausing to consider coded military secrets and newspaper scoops alike. Students will be delighted by code-cracking diagrams.

Presents a children's story about a little girl, Casey, and her grandfather who teaches her the importance of Morse Code.

In 1923, after learning Morse code and setting up his own amateur radio station, a twelve-year-old boy sends a message that leads to the rescue of a family stranded by a hurricane in Florida. Based on experiences of the author's father.

An overview of the history, development, and use of Morse code.