Langdon Head Lead Mine (Langdon Beck) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Wilcock, D | 1996 to 1998 | IRIS (Index Record for Industrial Sites) Survey Archive | 83071 |
| 2 | Ordnance Survey | 1856 to 1865 | First Edition Ordnance Survey Map | 6", Durham 30, 1861 |
| 3 | Ordnance Survey | 1894 to 1899 | Second Edition Ordnance Survey Map | 6", Durham 30 NE, 1898 |
| 4 | Dunham, K C | 1990 | The Geology of the Northern Pennine Orefield, Volume 1 TYNE to STAINMORE | |
| 5 | Beadle, H L | 1980 | Mining and Smelting in Teesdale | p. 24 |
| 6 | Linsley, S | 2017 | North Eastern and other Lead Mines | p72, p74-75 |