| Level | Item |
| Reference Number (click to see whole series/group) | BID1/98 |
| Extent | 1 file |
| Title | BANKERS INDUSTRIAL DEVELOPMENT (BID) CO LTD FILE RELATING TO RICHARD THOMAS & CO LTD: REDBOURN WORKS - MAP SHOWING NEIGHBOURING MINES |
| Date | 14 Mar 1942 |
| Description | Scale 1 inch to 1 mile. |
| Keyword | Iron steel general engineering |