Railway Bridge over Gaunless, Hagger Leazes (Cockfield) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Department of Environment, English Heritage, Historic Buildings and Monuments Commission | 1950 | List of buildings of special architectural or historic interest, also known as "Greenbacks" | LB Volume, Map & Item: 1400, 4, 8 |
| 2 | Durham County Council | Old Railway Bridge over River Gaunless | ||
| 3 | Durham County Council | Old Railway Bridge over River Gaunless | ||
| 4 | Durham County Council | Old Railway Bridge over River Gaunless | ||
| 5 | Durham County Council | Old Railway Bridge over River Gaunless - detail | ||
| 6 | Durham County Council | Old Railway Bridge over River Gaunless - detail | ||
| 7 | Durham County Council | 23-Sep-2016 | 8 Photographs of Railway Bridge over Gaunless, Hagger Leazes | |
| 8 | Tomlinson, W W | 1914 | North Eastern Railway, York, 561,569,605 | |
| 9 | Wilcock, D | 1996 to 1998 | IRIS (Index Record for Industrial Sites) Survey Archive | DU/DACE/12002 |
| 10 | Unknown | Historic England Aerial Photographs Collection | a) RAF/106G/LA/127 RS 4079 10-FEB-1945 b) OS/73409 V 57 XX-XXX-1973 | |
| 11 | Environment Agency | 2018 | LIDAR Environment Agency 2018 | LIDAR Environment Agency LAST RETURN 20-JUN-2018 |