| Reference Number | TPC/3/17/3 |
| Title | National (Upper) Theatre Lighting Hoist Revised General Arrangement |
| Level | Item |
| Date | 19 March 1974 |
| Description | Hall Stage Equipment Ltd drawing number Y90-5 issue A. Reference number K872B. |
| Extent | 1 drawing |
| Series | The National Theatre Lighting Hoists and Operating Procedure for the Lighting Hoist Control System - Olivier Theatre |