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 diagram of a piston.
| Identifier | ExFiles\Box 86\2\ scan0037 | |
| Date | 18th August 1933 guessed | |
| ", | ||