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).
Timeline for fitting a 12-EX car with a higher radiator and dashboard.
| Identifier | ExFiles\Box 15\1\ Scan049 | |
| Date | 20th July 1928 | |
| To Sg.{Arthur F. Sidgreaves - MD} from Hs.{Lord Ernest Hives - Chair} c. to BY.{R.W. Bailey - Chief Engineer} c. to DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} 47250 Hs{Lord Ernest Hives - Chair}1/LG20.7.28. PHANTOM. 'E' STEERING. 47430 Replying to Sg{Arthur F. Sidgreaves - MD}11/M19.7.28. We anticipate it will be 4 or 5 weeks before we have 12-EX car fitted with the higher radiator and dashboard. Hs.{Lord Ernest Hives - Chair} | ||