| Reference Number | TPC/5/6/431 |
| Title | Wiring Diagram for Sound/Fire Doors Lower Theatre |
| Level | File |
| Date | 09 February 1974-23 September 1974 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D18/384, unnumbered issue and issue B. |
| Extent | 2 drawings |
| Series | Mole-Richardson (Stage & Studio Engineering) Ltd Drawings |