1. Secret of the Knights (1983) by James Gasperini
2. Search for Dinosaurs (1984) by David Bischoff
3. Sword of the Samurai (1984) by Steve Perry and Michael Reaves
4. Sail with Pirates (1984) by James Gasperini
5. Civil War Secret Agent (1984) by Steve Perry
6. The Rings of Saturn (1985) by Arthur Byron Cover
7. Ice Age Explorer (1985) by Dougal Dixon
9. Wild West Rider (1985) by Stephen Overholser
10. American Revolutionary (1985) by Arthur Byron Cover
12. Search for the Nile (1986) by Robert W Walker
13. Secret of the Royal Treasure (1986) by Carol Gaskin
14. Blade of the Guillotine (1986) by Arthur Byron Cover
15. Flame of the Inquisition (1986) by Marc Kornblatt
16. Quest for the Cities of Gold (1987) by Richard Glatzer
17. Scotland Yard Detective (1987) by Seymour V Reit
18. Sword of Caesar (1987) by Bruce Stevenson and Robin Stevenson
19. Death Mask of Pancho Villa (1987) by Carol Gaskin and George Guthridge
20. Bound for Australia (1987) by Nancy Bailey
21. Caravan to China (1987) by Carol Gaskin
22. Last of the Dinosaurs (1988) by Peter Lerangis and Byron Preiss
23. Quest for King Arthur (1988) by Ruth Ashby
24. World War I Flying Ace (1988) by Richard Mueller
25. World War II Code Breaker (1989) by Peter Lerangis