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).
To Mr Warwick from DA regarding an order for 'Ayrtite' sleeves for valve stays.
| Identifier | ExFiles\Box 81\2\ scan0001 | |
| Date | 7th January 1921 | |
| X.4314 COPY FOR EFC. To Mr Warwick from DA.{Bernard Day - Chassis Design} DA{Bernard Day - Chassis Design}14/CB7-1-21. X.4314 RE AYRTITE SLEEVES. I am not sure whether you are still interested in "Ayrtite" sleeves on the valve stays, but I am under the impression that you are. Would you like us to order you a set according to the attached leaflet? DA.{Bernard Day - Chassis Design} | ||