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 policy for making private telephone calls.
| Identifier | ExFiles\Box 142\1\ scan0004 | |
| Date | 5th October 1937 | |
| 120H. D.{John DeLooze - Company Secretary} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}8/R.5.10.37. DL/DL.1.10.37. It is understood by my Department that any person wishing to use the telephone for private purposes should make it clear that it is a private call before asking for the number. Rm.{William Robotham - Chief Engineer} | ||