County Boundary Stones, Scraith Head, Harwood in Teesdale (Harwood in Teesdale) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Wilcock, D | 1996 to 1998 | IRIS (Index Record for Industrial Sites) Survey Archive | 73024 & 73025 |
| 2 | Raistrick, A | 1974 | Two Centuries of Industrial Welfare | |
| 3 | Fordyce, W, Thomas Fordyce | 1857 | The History and Antiquities of the County Palatine of Durham Volume II | page 64 |