Betancourt, John Gregory
Chronological Checklist

Series – Robert Silverberg's Time Tours

2 titles
• Robert Silverberg's Time Tours #6: Caesar's Time Legions (New York: HarperPaperbacks, 1991) as Jeremy Kingston
• Robert Silverberg's Time Tours #4: The Dinosaur Trackers (New York: HarperPaperbacks, 1991) with Arthur Byron Cover, and T R Sullivan, all as by Thomas Shadwell