Butterknowle (Butterknowle) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Atkinson, F | 1974 | Industrial Archaeology in North East England | p.272 |
| 2 | Turnball, P, Jones, R | 1978 | The archaeology of the coal measures and the magnesian limestone escarpment in Co. Durham | Lynesack and Softley, Industrial Archaeology. P. 63 |