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).
Cover page with a handwritten reference number and a date stamp.
| Identifier | ExFiles\Box 47\3\ Scan236 | |
| Date | 12th October 1931 | |
| X4117. [STAMP] ...LIMITED 12 OCT 31 DERBY. | ||