| Reference Number | TPC/5/4/589 |
| Title | Upper Theatre and Offices Group: Edge Detail of Loudspeaker in Conc. Wall, Outline of Loudspeaker in Front Wall |
| Level | Item |
| Date | January 1974 |
| Description | Denys Lasdun & Partners drawing number 552/03/6749. |
| Extent | 1 drawing |
| Series | Denys Lasdun & Partners Drawings |