| Reference Number | TPC/3/23/13 |
| Title | National (Upper) Theatre Wagon Drive Stack |
| Level | Item |
| Date | 20 December 1973 |
| Description | Hall Stage Equipment Ltd drawing number Y-75/24. Reference number L0901. Drawn by H A C. |
| Extent | 1 drawing |
| Series | The National Theatre Side Wagons in the Olivier and Lyttelton Theatres: Operating and Maintenance Instructions |