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).
Order for two types of Champion sparking plugs.
| Identifier | ExFiles\Box 35\3\ scan 170 | |
| Date | 11th June 1927 | |
| To ROY{Sir Henry Royce}/Ms. from Hs.{Lord Ernest Hives - Chair} x4196 Hs{Lord Ernest Hives - Chair}/TMW1/T11.6.27. Will you kindly order :- 6 doz. Champion sparking plugs type R.8. (4 doz. have already been supplied) 2 doz. ditto, type R.2. Hs.{Lord Ernest Hives - Chair} | ||