| Reference Number | TPC/5/6/148 |
| Title | [National Theatre. South Bank. Electrical Circuit "Stage Traps" and Disc Resolve Traps - Circuit Diagram] |
| Level | File |
| Date | c 1974 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D.14-306, unnumbered issue and issue B. |
| Extent | 4 drawings |
| Series | Mole-Richardson (Stage & Studio Engineering) Ltd Drawings |