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).
Log of trunk calls made by the Experimental Department.
| Identifier | ExFiles\Box 33\1\ Scan325 | |
| Date | 4th November 1926 | |
| To Wor.{Arthur Wormald - General Works Manager} from Hs.{Lord Ernest Hives - Chair} X1775 Hs{Lord Ernest Hives - Chair}/LG4.11.26. TRUNK CALLS. The following trunk calls have been put through by the Expl: Dept: :- DATE. | INITIAL. | REMARKS. 8.10.26 | Rm.{William Robotham - Chief Engineer} | Dunlops - re. 6.75" tyres. 11.10.26 | Rm.{William Robotham - Chief Engineer} | " " " 1.11.26 | Rm.{William Robotham - Chief Engineer} | R.{Sir Henry Royce} WW. Re. aero engines. 3.11.26 | Rm.{William Robotham - Chief Engineer} | Dunlops. | ||