| Reference Number | TPC/5/4/88/2 |
| Title | Upper Theatre and Offices Group Grids E-L Plan at Level 27.00 |
| Level | Item |
| Date | 04 March 1974 |
| Description | Denys Lasdun & Partners drawing number 552/01/3005 issue Z. Original date 25 June 1969. |
| Extent | 1 drawing |
| Series | Denys Lasdun & Partners Drawings |