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).
Cost comparison for Whitemetal bearings and Inlet valves from different suppliers.
| Identifier | ExFiles\Box 148\2\ scan0129 | |
| Date | 8th March 1939 | |
| 1260 to 1020 COPY FOR COST FILE. Typed 8.3.39. R.R. Whitemetal bearings 45/- per set. Vandervell W/M bearings 15/- per set. R.R. - S.65 Inlet valves 4/8 1/2d. each. S/SLV Motor Components valves 1/9d. each. Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} | ||