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).
Blueprint showing a cross-section of a mechanical assembly with a handwritten note for a proposed modification.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan202 | |
| Date | 7th September 1925 guessed | |
| THIS IS THE HOLE THAT IS PROPOSED TO STOP UP. | ||