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).
Cost comparison table for different car body styles.
| Identifier | ExFiles\Box 78\3\ scan0032 | |
| Date | 25th July 1909 guessed | |
| John & Wooler as ca standing 3500 x496 same car & some parts. Flat tube same Flat Judetis Boy. Price o.c. Water looms Jong Jonq Louvres | 65 | 40 | 66 | 36 Sloped Windscreen | 66 | 46 | 67&6 | 41 Open "" | 6&4 | 41 | 66&7 | 40. ep{G. Eric Platford - Chief Quality Engineer} 27/1 | ||