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).
Internal request to order various types of Osram lamp bulbs.
| Identifier | ExFiles\Box 166\4\ img109 | |
| Date | 4th April 1931 | |
| X6089 Roy{Sir Henry Royce}: from Hs{Lord Ernest Hives - Chair}/GJ. Hs{Lord Ernest Hives - Chair}/GJ1/ADL4.4.31. Will you please order the following Osram lamp bulbs :- 12 12-14 volt 4 watt S.B.C. cap centre contact S.7126 12 12-14 volt 9 watt S.B.C. cap double contact S.7172 12 6-7 volt 3 watt screw cap S.7584 6 16-18 volt 3 watt M.E. screw cap S.7954 Hs{Lord Ernest Hives - Chair}/GJ. | ||