8 Thorngate (Thorngate House) and Railings, Barnard Castle (Barnard Castle) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Department of Environment, English Heritage, Historic Buildings and Monuments Commission | 1950 | List of buildings of special architectural or historic interest, also known as "Greenbacks" | LB Volume, Map & Item: 770-1, 5, 210 |
| 2 | Sainsbury, I S | Iain Sainsbury AKA Ian Sainsbury (ISS) Field Investigators Comments | 21-DEC-79 | |
| 3 | Durham County Council | Thorngate House - window & rainwater goods | ||
| 4 | Durham County Council | Thorngate House - high level detail | ||
| 5 | Durham County Council | Thorngate House from Gray Lane | ||
| 6 | Durham County Council | Thorngate House, restored Railings | ||
| 7 | Durham County Council | Thorngate House, restored Railings | ||
| 8 | Durham County Council | Thorngate House, restored Railings | ||
| 9 | Durham County Council | 8 Thorngate (Thorngate House) & Railings |