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).
Trial pair of Zeiss headlamps, comparing their features to the P.100 and Bosch models.
| Identifier | ExFiles\Box 61a\2\ scan0437 | |
| Date | 17th December 1934 | |
| S/W. To Hs.{Lord Ernest Hives - Chair} from Lp.{Mr Lappin} Re: LAMPS. With reference to my conversation with you re lamps, Messrs. Zeiss are sending you on approval for trial a pair of their latest type head lamps. These lamps may be heavier than either the P.100 or the Bosch, but it must be borne in mind that they have a glass reflector which retains the light efficiency indefinitely and also a fog driving device as well. Lp.{Mr Lappin} WST- | ||