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).
Page number on a light blue divider sheet.
| Identifier | ExFiles\Box 1\7\ B001_X15 20 46 50 59-page085 | |
| Date | 16th September 1911 guessed | |
| 20 | ||