| Spectrum Test Prep: Grade 1 : Test Preparation | | |
| Spectrum Math, Grade 6 (McGraw-Hill Learning | | |
| Spectrum Phonics, Grade 3 (McGraw-Hill Learning | | |
| Spectrum Numbers and Counting, Preschool (Little | | |
| Spectrum Letters and Sounds, Preschool (Little | | |
| Spectrum Beginning Writing: Preschool (featuring | | |
| Spectrum Beginning Phonics, Preschool (Little | | |
| Spectrum Reading, Grade 1 (Spectrum (McGraw-Hill)) | | |
| Spectrum 13: The Best in Contemporary Fantastic | | |
| Spectrum 18: The Best in Contemporary Fantastic | | |
| Spectrum 18: The Best in Contemporary Fantastic | | |
| Spectrum 19: The Best in Contemporary Fantastic | | |
| Spectrum 2: the Best in Contemporary Fantastic | | |
| Spectrum 3: the Best in Contemporary Fantastic | | |
| Spectrum 4: the Best in Contemporary Fantastic | | |
| Spectrum 5 the Best in Contemporary Fantastic | | |
| Spectrum 6: the Best in Contemporary Fantastic | | |
| Spectrum 7: the Best in Contemporary Fantastic | | |
| Spectrum 10: the Best in Contemporary Fantastic | | |
| Spectrum 12: the Best in Contemporary Fantastic | | |
