Title: Who broke the wartime codes?
Description: This account of the Allied efforts to decode Axis messages and keep the success of their efforts secret describes the men and women behind the scenes, as well as the institutions they served and the early computers devised for the purpose.
Subjects: World War, 1939-1945, Cryptography, Electronic intelligence, Juvenile literature, Cryptographers, History, World war, 1939-1945, World war, 1939-1945, juvenile literature, United states, history, 20th century, United states, history, juvenile literature, Great britain, history, 20th century, Great britain, history, juvenile literature
Places: United States, Great Britain
Time periods: 20th century