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).
Confirming the receipt and fitting of 8 KLG sparking plugs type KI/859.
| Identifier | ExFiles\Box 5a\4\ 04-page213 | |
| Date | 11th January 1935 | |
| x5840 Rm{William Robotham - Chief Engineer} Hotel de France CHATEAUROUX. (Indre) France. 11th Janyry 1935. To Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} From G.F.H. 21 G IV We have received the 8 KLG sparking plugs type KI/859 and have fitted them to 21 G IV. G F Hancock | ||