| Reference Number | TPC/3/9/2 |
| Title | Lower Theatre Safety Curtain Emergency Lock |
| Level | Item |
| Date | c 1975 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D18-340. Drawn by J R Y. Works number 3089. |
| Extent | 1 drawing |
| Series | National Theatre Technical Manual for Lyttelton Theatre: 1. Safety Curtain, 2. Smoke Vents, 3. Dividing Doors |