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).
Photograph of a machined metal component.
| Identifier | ExFiles\Box 106\5\ scan0091 | |
| Date | 19th June 1933 guessed | |
| ", | ||