- Causes of the Civil War (American Civil War (Berkeley Heights, N.J.).)
- The Sperm Whale: Help Save This Endangered Species!
- The Mountain Gorilla: Help Save This Endangered Species! (Saving Endangered Species)
- The California Condor: Help Save This Endangered Species (Saving Endangered Species)
- The Whooping Crane: Help Save This Endangered Species! (Saving Endangered Species)