| Reference Number | TPC/5/10/105 |
| Title | National Theatre Electrical Layout Olivier and Lyttelton Theatre Details of Switchboards |
| Level | Item |
| Date | 02 March 1973 |
| Description | Crown House Engineering Ltd drawing number 904/790/R. Drawn by P O. |
| Extent | 1 drawing |
| Series | Crown House Engineering Ltd (Theatre Projects Consultants Ltd) Drawings |