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).
Partial blueprint showing sections of mechanical components.
| Identifier | ExFiles\Box 179b\4\ img055 | |
| Date | 13th April 1933 guessed | |
| ", | ||