"Discusses different methods for creating secret codes"--Provided by publisher.

Presents a variety of codes and ciphers and includes messages to encode and decode, as part of a story.

"Discusses different methods of secret communications used by spies, such as Morse code, the Enigma machine, the Najavo language, and digital steganography, and includes career information"--

Describes the role of a select group of Navajo Marines who developed a code based on their own native language that provided a means for secure communications among American forces in the Pacific during World War II.

"Amidst a complicated history of mistreatment by and distrust of the American government, the Navajo people--especially bilingual code talkers--helped the Allies win World War II"--

Presents a guide to codemaking, codebreaking, and their role in history, describing different types of codes and ciphers, discussing codebreaking and concealment techniques, and including brief stories about exciting moments in the history of the art.

In this picture book biography, young readers will learn all about Elizebeth Friedman (1892-1980), a brilliant American code breaker who smashed Nazi spy rings, took down gangsters, and created the CIA's first cryptology unit. Her story came to light when her secret papers were finally declassified in 2015. From thwarting notorious rumrunners with only paper and pencil to "counter-spying into the minds and activities of" Nazis, Elizebeth held a pivotal...

"Through Thomas H. Begay's singular story, this richly illustrated biography for young readers describes aspects of Navajo history and culture and shows how a select group of Navajo soldiers used their native Diné language to invent and operate a secret communications system that was crucial to a US victory in the Pacific during World War II"--