| Reference Number | TPC/5/2/190/2 |
| Title | National Theatre Details of Switchboards Upper and Lower Theatre |
| Level | Item |
| Date | 11 March 1973 |
| Description | Theatre Projects Consultants Ltd drawing number 904/790 issue 1. Drawn by P O. Original date 2 March 1973. |
| Extent | 1 drawing |
| Series | Theatre Projects Consultants Ltd Drawings |