Earthwork at Burn Hall, Croxdale (Croxdale) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | AP Card | NZ260383 | ||
| 2 | Royal Air Force | 18-Sep-1944 to 05-Oct-1949 | Durham County Council Digital Vertical Aerial Photograph Collection of Royal Air Force Aerial Photographs | F21.58 RAF 2654 02845 5 9 12 1958 |