From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint illustrating a modification to the front undershield to improve the cooling system.
| Identifier | WestWitteringFiles\U\May1930-July1930\ Scan109 | |
| Date | 26th January 1930 | |
| MODIFICATION TO IMPROVE COOLING SYSTEM. CUT AWAY FRONT UNDERSHIELD STANDARD FRONT UNDERSHIELD ROLLS-ROYCE LTD. T. ROOM, 26 JAN 1930 | ||