- Insects and spiders
- Birds, World Book
- Fish, World Book
- Mollusks and similar sea creatures
- Mammals, World Book
- The circulatory system
- The Milky Way
- Amphibians
- Butterflies of the United States and Canada
- Freshwater life of the United States and Canada
- Insects of the United States and Canada
- Mammals of the United States and Canada
- Stars-- birth and death
- Amphibians & reptiles of the United States and Canada
- Quasars and black holes
- Trees of the United States and Canada
- Consumable goods
- Forests and wetlands
- Ladybugs and other beetles, [book author, Steven Otfinoski]
- Oceans, islands, and polar regions
- Howlers and other New World monkeys, [book author, Mary E. Reid]
- Rattlers and other snakes, [book author, Cecilia Venn]
- Reptiles
- Wolves and other wild dogs, [book author, Mary E. Reid]
- Alien planets
- Rocks & minerals of the world
- Mountains, deserts, and grasslands
- Fossils of the world
- The respiratory system
- Galaxies
- The skeletal system/the muscular system
- The digestive system/the urinary system
- The universe-- mysteries and marvels