| Baldock Library | Children's non-fiction | C 688.725 | Available |
| Berkhamsted Library | Children's non-fiction | C 688.725 | Available |
| Cheshunt Library | Children's non-fiction | C 688.725 | Available |
| Harpenden Library | Children's non-fiction | C 688.725 | Available |
| Harpenden Library | Children's non-fiction | C 688.725 | Available |
| Hitchin Library | Children's non-fiction | C 688.725 | Available |
| Kings Langley Community Library | Children's non-fiction | C 688.725 | Available |
| Letchworth Library | Children's non-fiction | C 688.725 | Available |
| London Colney Community Library | Children's non-fiction | C 688.725 | Available |
| Oakmere Library | Children's non-fiction | C 688.725 | Onloan - Due: 11 Jul 2025 |
| Ware Library | Children's non-fiction | C 688.725 | Onloan - Due: 09 Jul 2025 |
| Welwyn Community Library | Children's non-fiction | C 688.725 | Available |
| Welwyn Garden City Library and Information Service | Children's non-fiction | C 688.725 | Available |