Thwaites Headstones at Old Church of St Mary (Brignall) - 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: 1397, 6, 72 |
| 2 | Durham County Council | Thwaites Headstones NW corner of churchyard of Old St Mary |