| Ashford Library | Reference | 491.7321Language | Not for loan (Set: 27 Apr 2021)Not reservable (Set: 14 Nov 2022) |
| Gravesend Library | Reference | 491.7321Language | Available |
| HMP Elmley | Adult non-fiction | 491.7321 | New item at processing (Set: 08 Aug 2022) |
| HMP Elmley | Adult non-fiction | 491.7321Language | Not reservable (Set: 09 Apr 2024)Onloan - Due: 10 Jun 2025 |
| HMP Elmley | Adult non-fiction | 491.7321Language | Not reservable (Set: 09 Apr 2024)Onloan - Due: 04 Jun 2025 |
| HMP Elmley | Adult non-fiction | 491.7321 | Missing (Set: 07 Nov 2023) |
| HMP Maidstone | Adult non-fiction | 491.7321Language | Not reservable (Set: 09 Apr 2024) |
| HMP Maidstone | Adult non-fiction | 491.7321 Shelved in Language (Dark Blue) | Available |
| HMP Maidstone | Adult non-fiction | 491.7321 | Available |
| HMP Swaleside | Adult non-fiction | 491.7'321 | Missing (Set: 07 Aug 2018) |
| HMP Swaleside | Adult non-fiction | 491.7321 LAN RLanguage | Not reservable (Set: 14 Feb 2022)Missing (Set: 10 Nov 2023) |