| Reference Number | TPC/5/4/409 |
| Title | Overhead Trunking Details Workrooms |
| Level | Item |
| Date | 04 April [1975] |
| Description | Denys Lasdun & Partners drawing number 552/02/3698 issue B. Original date February 1973. |
| Extent | 1 drawing |
| Series | Denys Lasdun & Partners Drawings |