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).
To all departments regarding the procedure for making private telephone calls.
| Identifier | ExFiles\Box 27\3\ Scan064 | |
| Date | 28th March 1939 | |
| Rm{William Robotham - Chief Engineer} 1204 To all Departments Sg{Arthur F. Sidgreaves - MD} writes as follows :- "Please circulate the following :- Should anyone wish to use the telephone for private purposes, before asking for the number they require, they should inform our operator that it is a private call. The operator will then make arrangements for the user to be charged for the call." D.{John DeLooze - Company Secretary} | ||