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 top gear acceleration of a 20 HP car against a 'Bush Light Six V'.
| Identifier | ExFiles\Box 5a\5\ 05-page090 | |
| Date | 19th March 1923 | |
| BUSH LIGHT SIX V 20 H.P. TOP GEAR CAR SPEED (M.P.H) TIME / SECS BUSH 20 H.P. RIGID + R.R. 19.3.23 A.J.L. | ||