Billing Hills Quarry, Eastgate, Stanhope (Eastgate) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Wilcock, D | 1996 to 1998 | IRIS (Index Record for Industrial Sites) Survey Archive | 93049 |
| 2 | Ordnance Survey | 1856 to 1865 | First Edition Ordnance Survey Map | 6", Durham 23, 1861; IRIS gives 6" Durham 23, 1856 |
| 3 | Wear Valley, Stanhope, Billing Hills Quarry .B Vyner | |||
| 4 | Vyner, B | Wear Valley, Stanhope, Billing Hills Quarry | ||
| 5 | Newcastle City Archaeology Unit, Truman, L | 01-Jan-1994 to 31-Dec-1994 | RCHME: North Pennines Industrial Archaeology Project |