| Reference Number | TPC/5/4/381 |
| Title | Window and Door Details (Central Courtyard) Workrooms. Level 49.00 |
| Level | Item |
| Date | October 1973 |
| Description | Denys Lasdun & Partners drawing number 552/02/3642 issue C. Original date 15 September 1972. |
| Extent | 1 drawing |
| Series | Denys Lasdun & Partners Drawings |