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 detailing a modification to a front undershield to improve the cooling system.
| Identifier | ExFiles\Box 12\7\ 07-page092 | |
| Date | 26th June 1930 guessed | |
| MODIFICATION TO IMPROVE COOLING SYSTEM. CUT AWAY FRONT UNDERSHIELD STANDARD FRONT UNDERSHIELD | ||