| Reference Number | TPC/5/4/270 |
| Title | Upper Theatre and Offices Group. Acoustic Lining to Rehearsal Rooms 1 and 2 (Levels: 49.00, 59.25) |
| Level | Item |
| Date | June 1973 |
| Description | Denys Lasdun & Partners drawing number 552/02/3421. |
| Extent | 1 drawing |
| Series | Denys Lasdun & Partners Drawings |