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).
The number of Phantom II chassis fitted with Ferbestos on the rear footbrakes.
| Identifier | ExFiles\Box 141\3\ scan0024 | |
| Date | 6th November 1930 | |
| Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} from Mx.{John H Maddocks - Chief Proving Officer} X719 Mx{John H Maddocks - Chief Proving Officer}4/T6.11.30 RECEIVED 30 NOV HS{Lord Ernest Hives - Chair} re Phantom II Chassis - Rear Footbrakes According to our instructions there are approximately 387 Phantom II which are fitted with Ferbestos on the rear footbrake. Mx{John H Maddocks - Chief Proving Officer}/Rm{William Robotham - Chief Engineer} | ||