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).
File divider with a handwritten reference number.
| Identifier | ExFiles\Box 11\3\ 03-page275 | |
| Date | 25th September 1930 guessed | |
| 79HLe. | ||