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).
Double-contact sample bulbs for headlamps from Philips Lamps Ltd.
| Identifier | ExFiles\Box 61a\1\ scan0400 | |
| Date | 10th November 1928 | |
| .X.4477 EFC. ROY{Sir Henry Royce}/MS3/P.10.11.28 HEAD LAMPS. ---------- We attach hereto copy of letter received from Philips Lamps Ltd., together with sample bulbs, which are Double-contact type. Please say if these are suitable . INCLOSURE N.o 783 "JUSTSO" RECEIVED NOV ROY{Sir Henry Royce} | ||