- How Did That Happen?: Rocket Readers Level 4 (Rocket Readers)
- Little Things (Gemmen, Heather, Rocket Readers) [paperback]
- Walk This Way (Gemmen, Heather. Rocket Readers. Walk This Way.)
- Who Cares
- Faithful Friends: Saved by God/God Made Faces/That Hurt!/Watch Me Go/You're Going to Get it (Gemmen, Heather. Rocket Readers. Faithful Friends.)