| Reference Number | TPC/3/23/11 |
| Title | National (Lower) Theatre Wagon Catches |
| Level | Item |
| Date | 13 March 1974 |
| Description | Hall Stage Equipment Ltd drawing number Y75/22. Drawn by S J. |
| Extent | 1 drawing |
| Series | The National Theatre Side Wagons in the Olivier and Lyttelton Theatres: Operating and Maintenance Instructions |