Incoming Resources
- Chester Nez and the unbreakable code, a Navajo code talker's story, Joseph Bruchac, pictures by Liz Amini-Holmes
- Secret languages, communicating in codes and ciphers, Julian A. Bielewicz. --
- Secret writing--codes and messages, by Eugene Baker ; illustrated by Lois Axeman. --
- Top secret, a handbook of codes, ciphers, and secret writing, Paul B. Janeczko ; illustrated by Jenna LaReau
- Code girls, the untold story of the American women code breakers of World War II, Liza Mundy