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).
Secret internal memo requesting the comparative costs of 25/30 and Wraith petrol tanks.
| Identifier | ExFiles\Box 148\5\ scan0135 | |
| Date | 14th January 1937 | |
| SECRET 104/4 Policy To E/Lid.{A. J. Lidsey} from Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}11/AP.14.1.37. Will you please let me have the comparative costs of the 25/30 and Wraith petrol tanks. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} | ||