| Reference Number | TPC/3/20/1 |
| Title | Hoist Arrangement National Theatre Masking Screens |
| Level | Item |
| Date | 12 August 1976 |
| Description | Tele-Stage Associates Ltd drawing number B58-1 issue 3. Drawn by R D Barnes. Original date 25 April 1975. |
| Extent | 1 drawing |
| Series | Masking Screen Hoists Operating and Maintenance Instructions |