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).
Graph comparing the Road Wheels Brake Horsepower required to drive Standard and Streamline cars at various speeds.
| Identifier | ExFiles\Box 82\3\ scan0245 | |
| Date | 7th May 1935 guessed | |
| ROAD WHEELS B.H.P. TO DRIVE CARS AT VARIOUS SPEEDS ROAD WHEEL B.H.P. M.P.H. STANDARD STREAMLINE 39 CWTS. HS{Lord Ernest Hives - Chair} 1959 | ||