- Buku AudioAfrican ElephantsRebecca E. Hirsch
- Buku AudioSiberian TigersRebecca E. Hirsch
- Buku AudioGrizzly BearsRebecca E. Hirsch
- Buku AudioMountain GorillasRebecca E. Hirsch
- Buku AudioPlatypusesRebecca E. Hirsch
- Buku AudioGray WolvesRebecca E. Hirsch
- Buku AudioHumpback WhalesRebecca E. Hirsch
- Buku AudioWhen Plants AttackRebecca E. Hirsch
- Buku AudioUsing Physical MapsRebecca E. Hirsch
- Buku AudioUsing Political MapsRebecca E. Hirsch
- Buku AudioUsing Climate MapsRebecca E. Hirsch
- Buku AudioLiving FossilsRebecca E. Hirsch