Syvertsen, Ryder
Chronological Checklist
- The Great Book of Movie Monsters (Chicago, Illinois: Contemporary Books, 1983) with Jan Stacy
- Doomsday Warrior (New York: Zebra Books, 1984) together with Jan Stacy writing together as Ryder Stacy
- Red America (New York: Zebra Books, 1984) together with Jan Stacy writing together as Ryder Stacy
- The Last American (New York: Zebra Books, 1984) together with Jan Stacy writing together as Ryder Stacy
- C.A.D.S. (New York: Zebra Books, 1985) with Jan Stacy writing together as John Sievert
- Bloody America (New York: Zebra Books, 1985) together with Jan Stacy writing together as Ryder Stacy
- America's Last Declaration (New York: Zebra Books, 1985) as Ryder Stacy
- American Rebellion (New York: Zebra Books, 1985) as Ryder Stacy
- C.A.D.S. #2: Tech Background (New York: Zebra Books, 1986) as John Sievert
- C.A.D.S. #3: Tech Commando (New York: Zebra Books, 1986) as John Sievert
- American Defiance (New York: Zebra Books, 1986) as Ryder Stacy
- American Glory (New York: Zebra Books, 1986) as Ryder Stacy
- America's Zero Hour (New York: Zebra Books, 1986) as Ryder Stacy
- Psychic Spawn (New York: Popular Library, 1987) with Adrian Fletcher
- C.A.D.S. #4: Tech Strike Force (New York: Zebra Books, 1987) as John Sievert
- American Nightmare (New York: Zebra Books, 1987) as Ryder Stacy
- American Eden (New York: Zebra Books, 1987) as Ryder Stacy
- Death, American Style (New York: Zebra Books, 1987) as Ryder Stacy
- Mystic Rebel (New York: Pinnacle Books, 1988)
- The Dancing Dead (New York: Pinnacle Books, 1988)
- Darkness Descends (New York: Pinnacle Books, 1988)
- C.A.D.S. #5: Tech Satan (New York: Zebra Books, 1988) as John Sievert
- C.A.D.S. #6: Tech Inferno (New York: Zebra Books, 1988) as John Sievert
- American Paradise (New York: Zebra Books, 1988) as Ryder Stacy
- American Death Orbit (New York: Zebra Books, 1988) as Ryder Stacy
- Temple of Dark Destiny (New York: Pinnacle Books, 1989)
- C.A.D.S. #7: Doom Commander (New York: Zebra Books, 1989) as John Sievert
- C.A.D.S. #8: Cybertech Killing Zone (New York: Zebra Books, 1989) as John Sievert
- American Ultimatum (New York: Zebra Books, 1989) as Ryder Stacy
- American Overthrow (New York: Zebra Books, 1989) as Ryder Stacy
- Cave of the Master (New York: Pinnacle Books, 1990)
- America's Sword (New York: Zebra Books, 1990) as Ryder Stacy
- American Dream Machine (New York: Zebra Books, 1990) as Ryder Stacy
- Fortress of Forbidden Destiny (New York: Pinnacle Books, 1991)
- America's Final Defense (New York: Zebra Books, 1991) as Ryder Stacy