Cross Street Sign, 57 Hawthorn Terrace, Durham (Durham) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Ordnance Survey | 1894 to 1899 | Second Edition Ordnance Survey Map | 1890 - 1899 |
| 2 | Smith, E | 2021 to 2022 | Comment by Ehren Smith, Local Listings Project Officer | 22/02/2022 |
| 3 | 1970 to 1979 | Seventh Epoch Ordnance Survey Map | 1970 - 1979 | |
| 4 | Private Individual | 22-Feb-2022 | Cross Street Sign, 57 Hawthorn Terrace, Durham, Local Listing Form & 1 photograph | Local Heritage List proforma |
| 5 | Local Heritage List, Durham City, April 2023 | Page 8 |