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).
Request to place an order for two types of plugs with Lodge Plugs Ltd. to be held as experimental stock.
| Identifier | ExFiles\Box 162\6\ img342 | |
| Date | 22th April 1937 | |
| HPS{Horace Percy Smith - Experimental Factory Mgr}/CEP. from Rm{William Robotham - Chief Engineer}/Wst. c. Wst/JH. 6002b Rm{William Robotham - Chief Engineer}/Wst.20/AP.22.4.37 Will you please send an order to Messrs Lodge Plugs Ltd., Rugby, for 48 RA.5/4 and 48 A.5.B/4 plugs which they are supplying to us. The plugs should be held as Expl. stock. Rm{William Robotham - Chief Engineer}/Wst. | ||