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).
Hill climb performance data for a Humber Car loaded with the equivalent of four passengers.
| Identifier | ExFiles\Box 180\M4\M4.1\ img019 | |
| Date | 17th March 1921 guessed | |
| -5- Humber Car contd: Hill Climb loaded to equal 4 passengers:- Start 1st. 2nd. 3rd. Time M.P.H. M.P.H. M.P.H. mins. secs. 30 10 10 10 25 26 26 1 0 28 28.5 27.5 1 30 28 29 29 1 49 30 1 m.47 s. 1 m.{Mr Moon / Mr Moore} 46.5 s. 30.5 30.5 ----------------OoOoOoO----------------- R.R. 583A (100) T/S.H 198. 10-12-201 G 1947 | ||