| Central Stocks Unit | Local history lending | LOC942.585 | Available |
| Central Stocks Unit | Local history lending | LOC942.585HAR | Available |
| HALS | Local history reference | 952.585 HAR Room 8County Reserve Stock | Not for loan (Set: 12 Jul 2019) |
| HALS | Local history reference | 942.585 HAR | Not for loan (Set: 14 Dec 2011) |
| Harpenden Library | Local history lending | 942.585HAR Local | Available |
| Harpenden Library | Local history lending | 942.585HAR Local | Available |
| Harpenden Library | Local history lending | 942.585HAR Local | Available |
| Harpenden Library | Local history reference | 942.585HAR Local | Not for loan (Set: 14 Dec 2011) |
| Redbourn Community Library | Local history lending | 942.585HARLOC | Available |
| Royston Library | Local history reference | 942.585on stack in Office | Not for loan (Set: 16 Aug 2011) |
| St Albans Library | Local history lending | 942.585/HAR | Missing copy (Set: 31 Mar 2022)In-transit from Stevenage Central Library to St Albans Library (Set: 23 Nov 2020) |
| St Albans Library | Local history reference | 942.585 | Not for loan (Set: 14 Dec 2011) |
| St Albans Library | Local history reference | 942.585/HAR | Not for loan (Set: 08 Mar 2023) |