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).
Requesting an official order for two filter elements from British Filters Ltd. for comparative testing.
| Identifier | ExFiles\Box 136\3\ scan0035 | |
| Date | 7th February 1939 | |
| 1139 To Roy.{Sir Henry Royce} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. G/JWH. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}3/MH.{M. Huckerby}7.2.39. Will you please pass an official order to British Filters Ltd. for 2 filter elements, one English product and the other an American product for comparative tests. These were ordered in our letter Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}20/JH.2.2.39. O/N.52404. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||