Gaunless Lead smelt mill (Copley) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Atkinson, F | 1974 | Industrial Archaeology in North East England | p.276 |
| 2 | Turnball, P, Jones, R | 1978 | The archaeology of the coal measures and the magnesian limestone escarpment in Co. Durham | Langleydale and Shotton, Industrial Archaeology. P. 62 |
| 3 | North East Mills Group | 21-Mar-2011 | North East Mills Group Mills Database | p 3 |
| 4 | Unknown | 1979 | Industrial Archaeology Survey Durham | p 43 |
| 5 | Wilcock, D | 1996 to 1998 | IRIS (Index Record for Industrial Sites) Survey Archive | |
| 6 | Henderson, C | 2004 | The Development of Horizontal Chimneys in the North Pennine Orefield. | |
| 7 | Ordnance Survey | 1856 to 1865 | First Edition Ordnance Survey Map | |
| 8 | May-2017 | Clay Products in North East England | ||
| 9 | Linsley, S | Smelt Mills in North Pennine Orefield | p40-41 |