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).
Instruction regarding the machining of Wraith steering yoke pieces following a telephone conversation.
| Identifier | ExFiles\Box 9\7\ 07-page092 | |
| Date | 8th November 1937 | |
| 650 HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}5/R.8.11.37. WRAITH STEERING. Confirming our telephone conversation with you to-day, we should be glad if you would arrange for all Wraith yoke pieces that have not proceeded too far to be machined to the attached drawing. Official D.O. instructions on the subject will follow. Rm.{William Robotham - Chief Engineer} | ||