9780451451873 | New Amer Library, October 1, 1992, cover price $4.50 | About this edition: Sixty years after the disappearance of explorer Percy Fawcett into the Brazilian rain forests, Christine Fawcett travels to the region along with her boyfriend Tony and his buddy Manuel, to find out what really happened to her ancestor

9780441736966 | Ace Books, March 1, 1991, cover price $3.95 | also contains Foundations of Network Optimization and Games | About this edition: Beyond the Mistwall, the Dark Lord gathers strength, turning his enemies' worst fears to reality with…The Dreamstone.

9780441766017 | Ace Books, March 1, 1991, cover price $3.95 | also contains Regulation of Nutrient Uptake by Plants: A Biochemical and Molecular Approach | About this edition: Danger, deceit and double-cross .

9780441766000 | Reissue edition (Ace Books, January 1, 1989), cover price $3.50 | About this edition: Corson brenn Torisk, a top swordswoman, is hired as a guard by Lady Nyctasia, a beautiful sorceress, but discovers too late that the magician has a horde of enemies

9780441878833 | Ace Books, December 1, 1987, cover price $2.95 | also contains The Kingdom of Wrenly Collection: The Lost Stone / the Scarlet Dragon / Sea Monster! / the Witch's Curse | About this edition: The mercenary swordswoman Corson and her sorceress companion, Lady Nyctasia, follow a mysterious riddle to a long-abandoned, unparralled treasure, but the ruthless Cymvelan Circle gathers its forces to claim its own