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 order memo for Champion sparking plugs.
| Identifier | ExFiles\Box 35\3\ scan 172 | |
| Date | 16th June 1927 | |
| To O.O. from Hs.{Lord Ernest Hives - Chair} X.496 Hs{Lord Ernest Hives - Chair}1/LG16.6.27. Please order for us :- 4 doz. R-12 Champion sparking plugs. 4 doz. R-11 " " " Hs.{Lord Ernest Hives - Chair} | ||