| Reference Number | TPC/3/6/31 |
| Title | Elevator Locks Power Unit Layout of Valves |
| Level | Item |
| Date | 31 May 1974 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D14/288. Drawn by S W. |
| Extent | 1 drawing |
| Series | National Theatre Drum Drawings Part 2: 1 of 2 |