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).
Concerning 20/25 HP clutches and a related flywheel.
| Identifier | ExFiles\Box 103\1\ scan0118 | |
| Date | 16th July 1934 | |
| Hs.{Lord Ernest Hives - Chair} from Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} X5300 Wor{Arthur Wormald - General Works Manager}6/R.16.7.34. 20/25 H.P. Clutches. I attach copy of memo - H8/NM13.7.34.- and shall be glad if you will kindly enable me to reply. V Wor.{Arthur Wormald - General Works Manager} Flywheel & clutch to N.Sch.3948/3954 | ||