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 request to order two dozen modified spark plugs for the Peregrine engine from two different suppliers.
| Identifier | ExFiles\Box 162\6\ img169 | |
| Date | 8th August 1932 | |
| Roy.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X4425 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}10/AD 8.8.32. PLUGS FOR PEREGRINE. X19 Will you please order from the Lodge Plug Co. one dozen 14 mm. HD.{Mr Hayward/Mr Huddy}14.3 type plugs " " A.15 plugs modified as per our letter Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}8/AD. of today's date. also from the K.L.G. Sparking Plug Co. one dozen L.K.S.6. 14 mm. plugs modified as per our letter Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}9/AD. of today's date. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||