| Reference | Title | Date |
| RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
| RHP146000/340 | Plans of workings at Ordnance Survey National Grid Reference NS 26/7612 Towerhill, Bridge-end, Carcoside, Carco Mains and Lady Ann Colliery noted on these plans. | 1961 |