| Reference Number | TPC/5/10/46 |
| Title | National Theatre Electrical Layout Foyer Lighting Circuits Type Z Dimmer Level and Switching |
| Level | Item |
| Date | 13 March 1978 |
| Description | Crown House Engineering Ltd drawing number 904/268/R. Drawn by A M S. |
| Extent | 1 drawing |
| Series | Crown House Engineering Ltd (Theatre Projects Consultants Ltd) Drawings |