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).
Naming and status of the Bentley 60 High Power Head Engine and the programme for Bentley III & 50 models.
| Identifier | ExFiles\Box 161a\2\ scan0254 | |
| Date | 14th June 1938 guessed | |
| -6- BENTLEY 60. (High Power Head.) We are using this title in future for the High Power Head Engine. All drawings have been completed and issued and the date at which the engine can be available is now a matter of same being built with the least possible delay. BENTLEY III & BENTLEY 50. Programme. | ||