Cowley, Stewart
Chronological Checklist
Series – Galactic Encounters
- Aliens in Space: An Illustrated Guide to the Inhabited Galaxy (Maidenhead, Berkshire: Intercontinental Book Productions, 1979) as by Steven Caldwell
- Star Quest: An Incredible Voyage into the Unknown (Maidenhead, Berkshire: Intercontinental Book Productions, 1979) as by Steven Caldwell
- The Fantastic Planet: A World of Magic and Mystery (Maidenhead, Berkshire: Intercontinental Book Productions, 1980) as by Steven Caldwell
- Dangerous Frontiers: The Fight for Survival on Distant Worlds (Maidenhead, Berkshire: Intercontinental Book Productions, 1980) as by Steven Caldwell
- Settlers in Space: The Fight for Survival on Distant Worlds (New York: Crescent Books, 1980) as by Steven Caldwell
- Worlds at War: An Illustrated Study of Interplanetary Conflict (Maidenhead, Berkshire: Intercontinental Book Productions, 1980) as by Steven Caldwell
- Space Patrol: The Official Guide to the Galactic Security Force (Maidenhead, Berkshire: Intercontinental Book Productions, 1980) as by Steven Caldwell