| Reference Number | TPC/5/13/7 |
| Title | Crown House Engineering Ltd General Arrangement of M. V. Switchboard Ref T. P. 2 Lower Theatre Dimmer Room, for New National Theatre, London |
| Level | File |
| Date | 07 May 1974-09 December 1974 |
| Description | Varilectric Ltd drawing number F/10831, unnumbered issue and issue A. |
| Extent | 3 drawings |
| Series | Varilectric Ltd Drawings |