| Reference Number | TPC/5/4/385 |
| Title | Elevation and Plan of Win[d]ows on 49.00 Level (Central Courtyard) Grid 11 |
| Level | Item |
| Date | January 1973 |
| Description | Denys Lasdun & Partners drawing number 552/02/3647 issue A. Original date 27 October 1972. |
| Extent | 1 drawing |
| Series | Denys Lasdun & Partners Drawings |