| Reference Number | TPC/3/17/8 |
| Title | National (Upper) Theatre Diverter Pulley - Lighting Hoists |
| Level | Item |
| Date | 19 May 1975 |
| Description | Hall Stage Equipment Ltd drawing number Y90/28. Drawn by C A. |
| Extent | 1 drawing |
| Series | The National Theatre Lighting Hoists and Operating Procedure for the Lighting Hoist Control System - Olivier Theatre |