| Abbots Langley Library | Adult non-fiction | 915.930445 | Available |
| Baldock Library | Adult non-fiction | 915.930445 | Available |
| Berkhamsted Library | Adult non-fiction | 915.930445 | Available |
| Bishops Stortford Library | Adult non-fiction | 915.930445 | Available |
| Buntingford Library | Adult non-fiction | 915.930445 | Available |
| Bushey Library | Adult non-fiction | 915.930445 | Onloan - Due: 17 Jun 2025 |
| Croxley Green Library | Adult non-fiction | 915.930445 | Available |
| Harpenden Library | Adult non-fiction | 915.930445 | Onloan - Due: 14 Jul 2025 |
| Hertford Library | Adult non-fiction | 915.930445 | Available |
| Hitchin Library | Adult non-fiction | 915.930445 | Available |
| Hoddesdon Library | Adult non-fiction | 915.930445 | Available |
| Letchworth Library | Adult non-fiction | 915.930445 | Available |
| Marshalswick Library | Adult non-fiction | 915.930445 | Available |
| Oakmere Library | Adult non-fiction | 915.930445 | Available |
| Radlett Library | Adult non-fiction | 915.930445 | Onloan - Due: 17 Jul 2025 |
| Rickmansworth Library | Adult non-fiction | 915.930445 | Available |
| Royston Library | Adult non-fiction | 915.930445 | Available |
| St Albans Library | Adult non-fiction | 915.930445 | Onloan - Due: 22 Jul 2025 |
| Stevenage Central Library | Adult non-fiction | 915.930445 | Onloan - Due: 30 Jul 2025 |
| Tring Library | Adult non-fiction | 915.930445 | Available |
| Ware Library | Adult non-fiction | 915.930445 | Onloan - Due: 28 Jul 2025 |
| Watford Central Library | Adult non-fiction | 915.930445 | Onloan - Due: 29 Jul 2025 |
| Welwyn Garden City Library and Information Service | Adult non-fiction | 915.930445 | Available |