| Reference Number | TPC/3/20/7 |
| Title | Carriage Assembly National Theatre Masking Screens |
| Level | Item |
| Date | 03 March 1976 |
| Description | Tele-Stage Associates Ltd drawing number B58-20 issue 2. Drawn by R D Barnes. Original date 1 August 1975. |
| Extent | 1 drawing |
| Series | Masking Screen Hoists Operating and Maintenance Instructions |