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).
Table quantifying units included by ROY/LES but not provided by Vauxhall.
| Identifier | ExFiles\Box 148\2\ scan0167 | |
| Date | 27th April 1939 | |
| DA. {Bernard Day - Chassis Design} 1/G.27.4.39. UNITS INCLUDED BY ROY {Sir Henry Royce} /LES. BUT NOT PROVIDED BY VAUXHALL. Total K. {Mr Kilner} Non-Standard. Damper Control Unit. 27 15 12 Servo Drive 13 1 12 Side Gear Lever. 77 36 41 117 52 65 | ||