The Happy Hollisters Series

11 titles

1. 1. The Happy Hollisters
2. 2. The Happy Hollisters on a River Trip, Volume 2
3. 3. The Happy Hollisters at Sea Gull Beach
4. 4. The Happy Hollisters and the Indian Treasure
5. 5. The Happy Hollisters at Mystery Mountain: Volume 5
6. 6. The Happy Hollisters at Snowflake Camp
7. 7. The Happy Hollisters and the Trading Post Mystery
8. 8. The Happy Hollisters at Circus Island: Volume 8
9. 9. The Happy Hollisters and the Secret Fort
10. 14. The Happy Hollisters and the Scarecrow Mystery
11. 30. The Happy Hollisters and the Mystery of the Golden Witch, Book 30