- CryptographyRobert Curley, Britannica Educational Publishing Staff
- The complete history of aviationRobert Curley
- The science of warRobert Curley
- Weapons of mass destructionRobert Curley
- War at sea and in the airRobert Curley
- Renewable and alternative energyRobert Curley
- The complete history of railroadsRobert Curley