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).
Acknowledging the safe arrival of a Stephan-Grebel bulb.
| Identifier | ExFiles\Box 166\4\ img122 | |
| Date | 26th November 1931 | |
| HS{Lord Ernest Hives - Chair}/WST. FROM DA.{Bernard Day - Chassis Design} X6089. DA{Bernard Day - Chassis Design}1/M26.11.31. Thank you for the Stephan-Grebel bulb which has arrived safely. We have not yet tried it but it appears to be alright. One tried Found OK DA.{Bernard Day - Chassis Design} | ||