| Bishops Stortford Library | Adult non-fiction | 636.7 | Available |
| Borehamwood Library | Adult non-fiction | 636.7 | Available |
| Bushey Library | Adult non-fiction | 636.7 | Available |
| Cheshunt Library | Adult non-fiction | 636.7 | Available |
| Croxley Green Library | Adult non-fiction | 636.7 | Available |
| Harpenden Library | Adult non-fiction | 636.7 | Available |
| Hatfield Library | Adult non-fiction | 636.7 | Available |
| Hertford Library | Adult non-fiction | 636.7 | Available |
| Hitchin Library | Adult non-fiction | 636.7 | Available |
| Hoddesdon Library | Adult non-fiction | 636.7 | Available |
| Letchworth Library | Adult non-fiction | 636.7 | Available |
| Marshalswick Library | Adult non-fiction | 636.7 | Available |
| Oxhey Library | Adult non-fiction | 636.7 | Available |
| Radlett Library | Adult non-fiction | 636.7 | Available |
| Rickmansworth Library | Adult non-fiction | 636.7 | Available |
| Royston Library | Adult non-fiction | 636.7 | Available |
| St Albans Library | Adult non-fiction | 636.7 | Available |
| St Albans Library | Adult non-fiction | 636.7 | Available |
| Stevenage Central Library | Adult non-fiction | 636.7 | Available |
| Tring Library | Adult non-fiction | 636.7 | Available |
| Welwyn Garden City Library and Information Service | Adult non-fiction | 636.7 | Available |