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).
Blank, yellowed page from the archives.
| Identifier | ExFiles\Box 12\7\ 07-page063 | |
| Date | 10th February 1930 guessed | |
| ", | ||