| Reference Number | TPC/5/8/20 |
| Title | National Theatre Double Passive Track for Stage Wagons |
| Level | File |
| Date | 06 June 1973-19 October 1973 |
| Description | Hall Stage Equipment Ltd drawing number Y-75/5, unnumbered issue and issue A. |
| Extent | 2 drawings |
| Series | Hall Stage Equipment Ltd Drawings |