Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/878 | Plans of workings at Ordnance Survey National Grid Reference NT 36/3672 Wallyford Colliery, Levenhall, Wallyford Toll, Wallyford Farm, Drummore Colliery and Dolphington Colliery named on these plans. | 1960-1961 |