Code Breaker, Spy Hunter: How Elizebeth Friedman Changed the Course of Two World Wars - Laurie Wallmark - Bog

Decode the story of Elizebeth Friedman, the cryptologist who took down gangsters and Nazi spies
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 role in the early days of US
cryptology. No code was too challenging for her to crack, and
Elizebeth¿s work undoubtedly saved thousands of lives. Extensive back
matter includes explanations of codes and ciphers, further information
on cryptology, a bibliography, a timeline of Elizebeth¿s life, plus
secret messages for young readers to decode.