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).
The content of the document is illegible due to severe fading and degradation.
| Identifier | ExFiles\Box 10\1\ 01-page58 | |
| Date | 31th July 1923 guessed | |
| Illegible | ||