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).
Information about the engine used by Campbell for a record attempt.
| Identifier | ExFiles\Box 142\3\ scan0362 | |
| Date | 4th October 1937 | |
| 1204. 1931 R39 tman 1932 S/W To Gry.{Shadwell Grylls} from Sg.{Arthur F. Sidgreaves - MD} Please ascertain from the man who was with Campbell which engine he used for the actual record, i.e. the 1929 engine of [struck through] or the 1931, and whichever it was would you ascertain and let me know when that particular engine was last at the Works for overhaul and test. Sg.{Arthur F. Sidgreaves - MD} | ||