Photograph displaying two rows of main and connecting rod bearing shells.
| Identifier | ExFiles\Box 5a\3\ 03-page074 | |
| Date | 26th August 1931 guessed | |
| ", | ||
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).