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 a supply of head lamp and cap bulbs.
| Identifier | ExFiles\Box 166\4\ img204 | |
| Date | 18th February 1937 | |
| 6089 HPS{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Wst. Rm{William Robotham - Chief Engineer}/Wst1/M.18.2.37. Will you please order for us 1 doz. 12 volt, 48 watt S.C.C. Head Lamp Bulbs 2 doz. 3.5 volt MES. Cap Bulbs. Rm{William Robotham - Chief Engineer}/Wst. Des. 25-ch 4/3/37 | ||