Incoming Resources
- Top secret, a handbook of codes, ciphers, and secret writing, Paul B. Janeczko ; illustrated by Jenna LaReau
- The woman who smashed codes., a true story of love, spies, and the unlikely heroine who outwitted America's enemies, Jason Fagone, MP3
- Code girls, the true story of the American women who secretly broke codes in World War II, Liza Mundy
- Code breaker, spy hunter, how Elizebeth Friedman changed the course of two world wars, by Laurie Wallmark ; illustrated by Brooke Smart
- Navajo code talkers, by Andrew Santella
- Can you crack the code?, by Ella Schwartz ; illustrated by Lily Williams
- Code girls, the untold story of the American women code breakers of World War II, Liza Mundy