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).
Typed table comparing wheel driver data for 4 1/2-Litre and 3 1/2-Litre models by mileage.
| Identifier | ExFiles\Box 84\4\ scan0122 | |
| Date | 13th November 1936 guessed | |
| WHEEL DRIVERS. MILEAGE. | 4 1/2-LITRE. | 3 1/2-LITRE. 1000. | 1. | - 2000. | 3.(1 hard driver) | - 3000. | - | - 4000. | - | - 5000. | 1. | - 6000. | 1. | - 7000. | 2. | - 8000. | 1. | - 9000. | 2. (1 hard driver) | - 10,000. | - | - 16,000. | - | 1. 17,000. | - | 1. 18,000. | - | 1. 22,000. | - | 2. 23,000. | - | 1. (Woman driver) 27,000. | - | 1. (Woman driver) 4 1/2-LITRE. | 3 1/2-LITRE. 6. GA. Series. | 1 CW, 1 FC. 3. GP. " | 1 AH, 1 EJ. 2. HK.{Col. T. Harker - Sales} " | 1 BL. | 1 BN{W.O. Bentley / Mr Barrington}, | 1 DK. | ||