| Reference Number | TPC/3/23/2 |
| Title | National (Upper Theatre) Wagon Track Layout |
| Level | Item |
| Date | 21 November 1974 |
| Description | Hall Stage Equipment Ltd drawing number Y-75/9 issue B. Original issue date 26 November 1973. |
| Extent | 1 drawing |
| Series | The National Theatre Side Wagons in the Olivier and Lyttelton Theatres: Operating and Maintenance Instructions |