| Reference Number | TPC/5/10/62 |
| Title | National Theatre Electrical Layout Loudspeakers 1 |
| Level | Item |
| Date | 12 March 1978 |
| Description | Crown House Engineering Ltd drawing number 904/714/R. Drawn by R G B. |
| Extent | 1 drawing |
| Series | Crown House Engineering Ltd (Theatre Projects Consultants Ltd) Drawings |