58 books • 26 series
An Airplane's Day (Machines at Work)
Moons (Journey Into Space)
A Bulldozer's Day (Machines at Work)
Minnesota (State Profiles)
Lizards (Favorite Pets)
Sea Stars (Ocean Animals)
Turtles (Favorite Pets)
Crabs (Ocean Animals)
Hamsters (Favorite Pets)
Airplanes (Machines with Power!)
Octopuses (Ocean Animals)
Jellyfish (Ocean Animals)
Scotland (Exploring Countries)
Lions (Blastoff! Readers: Animal Safari)
Tigers (Blastoff! Readers: Animal Safari)
Blastoff! Exploring Countries
Norway (Blastoff! Readers: Exploring Countries: Level 5 )
Chimpanzees (Blastoff! Readers: Animal Safari)
Alligators (Animal Safari)
Gorillas (Blastoff! Readers: Animal Safari)
Zebras (Blastoff! Readers: Animal Safari)
Badgers (Blastoff! Readers: Backyard Wildlife: Level 1 )
Ducks (Blastoff! Readers: Backyard Wildlife: Level 1 )
Gophers (Blastoff! Readers: Backyard Wildlife: Level 1 )
