| Reference Number | TPC/5/2/190 |
| Title | National Theatre Details of Switchboards Upper and Lower Theatre |
| Level | File |
| Date | 02 March 1973-11 March 1973 |
| Description | Theatre Projects Consultants Ltd drawing number 904/790, unnumbered issue and issue 1. |
| Extent | 2 drawings |
| Series | Theatre Projects Consultants Ltd Drawings |