Related Clues:
- 'Enemy of the State' org.
- U.S. code and cipher grp.
- Largest U.S. employer of mathematicians
- Org. in old spy novels
- Wild Bill Donovans org.
- W.W. II spy org.
- Secret W.W. II agcy.
- WWII intelligence agency
- CIA forerunner
- 62-Down forerunner
- Ultrasecret org.
- Covert WWII org.
- Prophesy
- Intelligence gathering dept.
- Code-cracking intelligence org.