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).
Line graph comparing top gear performance (speed vs. time) of a Buick Light Six versus a 20 HP model.
| Identifier | ExFiles\Box 5a\5\ 05-page089 | |
| Date | 1st August 1920 | |
| [ "BUICK LIGHT SIX V", "20 H.P. TOP GEAR", "Car Speed (M.P.H.)", "TIME (Secs.)", "BUICK", "FOHA 310 + RR", "A.L.L.", "M/8.20" ], | ||