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).
Preliminary pencil sketch of a mechanical component or assembly.
| Identifier | ExFiles\Box 17\4\ Scan019 | |
| Date | 31th August 1931 | |
| RU ROLLS-ROYCE, LIMITED DERBY 31 AUG 31 | ||